As almost any type of soil sets its own demands where it concerns the model of the auger to be applied.
In the course of the years many models have been developed. Years of experience and many contacts with soil researchers at home and abroad made it possible to achieve the optimum design for various types.

8-10 meter

By applying extension rods with a bayonet- or a conical threaded connection augering to greater depths is possible. With hand auger equipment a depth of 8-10 meter can realistically be achieved. The maximum boring depth strongly depends on various factors such as: depth of the groundwater, the soil profile, the characteristics of the material the auger has to pass through.

Various auger types:
· Edelman augers
· Riverside auger
· Stony soil auger
· Spiral auger
· Stone catcher
· Soft soil auger
· Gouge auger
· Piston sampler

There are two types of connection: the bayonet connection and the conical threaded connection.

Bayonet connection
The advantage of the bayonet connection is that it is a very fast coupling with little weight.
A slight disadvantage is that it is not free of play. The bayonet connection is considered as the standard connection.

Conical screw thread connection
This connection is based on the male and female threads on the parts to be coupled. By firmly tightening the connection with the aid of spanners, a rigid construction is made.

01.11.SE Ergonomical auger set
This set for heterogeneous soils is used to carry out manual drilling and sampling in a great variety of different soils in an ergonomically sound way. It is particularly suitable for general soil investigation (description of the layering, geology, archeaology) as well as taking samples for such activities as environmental research.

01.11.SO Auger set for heterogeneous soils
Augerings and samplings in homogeneous soils, in almost all cases can be executed with one type of auger. For augerings in heterogeneous soils, several different auger types will be applied. This led to an auger set for heterogeneous soils. With the standard set it is possible to execute manual augering to a depth of 5 meter, without great physical effort.

01.11.SZ Auger set for heterogeneous soils
This auger set for heterogeneous soils is the same as the one mentioned above, but with a conical screw thread connection.

01.16 Prospecting kit for geological surveys
The kit can be used for augerings in heterogeneous soils, to improve the mobility it comprises less different auger types.

01.09.SA Piston Sampler set

01.09.SB Dividable piston sampler set
The sets are very suitable for sampling less cohesive soil layers below the (ground) water table to a depth up to 5 meter. The samples show little disturbance and therefore are suitable for very accurate profile description. With 01.09.SA set one piston sampler is used with a sample gutter to empty the sampler in. The 01.09.SB set with dividable piston sampler enables you to take samples of various lengths with sample tubes with 50, 100 and 150 cm length..

For drilling into the ground and taking soil samples, both above and below the groundwater level, you can choose between two carefully thought-out hand-operated bailer boring auger sets. The first one is a complete set for drilling to depths of approximately 7 meter (for one operative):

01.12.SA Hand-operated bailer boring auger set for heterogeneous soils
The standard bailer boring auger set is suitable for augerings to a depth of about 7 meter. The set is very suitable for - in addition to exploratory soil augering and sampling - inserting monitoring well pipes for groundwater level measurements and for sampling.

The bailer, an essential part of the set, is a stainless steel tube with a stainless steel or synthetic valve on the lower part. By moving the bailer rapidly up and down loose material will collect in the bailer. In principle, this takes place below the tube where space is available. This allows the casing tubes to be pushed deeper into the ground. When turning in the casing tubes, the casing shoe with the slotted notches protects the lower tube and simplifies the turning in of the casing tubes. In order to protect the top tube a steel casing head is provided. For the protection of the screw thread during transport special thread protectors are supplied. The casing tube platforms are used in combination with the tube clamp. Bailing and driving in the casing tubes can be done in a more ergonomically way.

For drilling into the ground and taking soil samples, both above and below the groundwater level, you can choose between two carefully thought-out hand-operated bailer boring auger sets. The Bailer boring rig with augers set wit tripod and winch is for drilling up to 15 meter deep. This set needs a minimum of two persons.

02.04.SA Bailer boring rig with auger set with tripod and winch
This set is used, in particular for:
· Deeper profile examination for mapping purposes and geological / mineralogical surveys and extraction and foundation surveys in all types of sub-soils, both above and below the groundwater level.
· Casing tube for undisturbed soil sampling
· Groundwater examination for water catchment and determining water quality
· The installation of larger diameter monitoring well pipes and / or sampling tubes.

The tripod is an indispensable aid when making deeper boreholes (bailer boring), or when using heavier soil sampling equipment. A tripod is also necessary when installing water wells and heavy water pumps, and for rigging work in the field. The hand-winch is used for lifting and rigging work in the field, e.g. when bailing and pulling casing tubes out of the soil. The winch can be attached simply to the tripod. The entire set can be carried on a small trailer.

Augering by hand (manpower) at greater depths is usually perceived as very strenuous as the augering gets deeper or the augers that are used have a larger diameter. Yet, in order to use heavier soil augers and / or soil core sampling equipment as efficiently and ergonomically correct as possible, it is desirable to use all sorts of lifting tools.

Our program provides for this need by means of two complete sets of lifting equipment for soil drilling equipment. Both sets include a tripod, a winch, and mechanical jacks. In selecting a tripod, working height, weight, and maximum load capacity (= tensile force) are usually determinant factors. The selection of the winch also depends strongly on the purpose for which it is used. Furthermore, the type of tripod to which the winch is to be fixed is essential.

15.08 Light lifting set
The light lifting set is usually used in combination with the surveying set for shallow water wells, or with the hand-operated bailer boring sets. If the removal of the casing tubes, particularly in deeper borings or in strongly cohesive soils, requires more than manpower alone, this light lifting set can provide the solution of your problems. With a hand-operated winch and a light mechanical jack, the casing tubes are drawn out of the borehole.

15.09 Heavy lifting set
The heavy lifting set is usually used in combination with heavier (hand- operated) drilling equipment for water wells. The tripod and the winch are used, among other things, for lowering and lifting drilling equipment (e.g. the bailer), or for removing the casing tubes.

The heavy lifting set is used:
· As a tool in performing deeper hand drillings or for drilling with heavier drilling equipment
· For removing casing tubes and lowering / lifting drilling equipment.
· For the installation of water wells and submersible pumps
· General hoisting activities

The tripod and the winch are also available as separate items in the program of Eijkelkamp Agrisearch Equipment:

02.01 Tripods
A tripod is an essential part of a bailer boring set (cable tool drilling equipment). Also drillings at greater depths, or the application of heavier augering or soil core sample equipment require the use of a tripod.
Our program includes a lighter version (tensile force 4 kN) and a heavy version (tensile force 18 kN).

02.02 Hand-operated winches
Winches are used for lifting and hoisting activities in the field. They are fixed to one of the legs or to the frame of a tripod. The program includes both a light hand winch (capacity 5 kN) and a heavy hand winch (20 kN). The light hand winch is operated by one person. The heavy winch can be operated by either two persons or one person.

Hand-operated equipment can be applied for soil research up to a depth of 5 to 10 meter. The mutual quality of many gouge augers is that they all are fitted with an almost half-cylindrical operational part with parallel cutting edges running vertically, justifying the name gouge auger. This operational part may vary in length as well as in diameter. The most suitable length depends on the penetration resistance, the substance of the soil and the required boring depth. The longer the operational part the more vulnerable the auger is to torsion. The selection of the most suitable diameter depends on the composition and the structure of the soil and on the purpose of the research.

In general a smaller diameter is applied in soils with a fine and/or dense structure, by comparison to soils with a loose structure (for instance young swampy peat).

04.02 Bi-partite gouge augers
The bi-partite gouge augers can be extended by coupling extension rods. In this way samplings can be carried out in a very short time and greater depths can be reached.

04.01 Single gouge augers
The single gouge augers can not be extended and are supplied in various lengths and diameters.

Applications:
Because of the minimal disturbance of the sample, the gouge auger is frequently applied in profile research for:
· Soil mapping
· Soil suitability review
· Educational purposes
· Root research
· Soil sampling for fertilization research
· Clay distribution research
· Paleontological research

04.04 Gouge auger set for stepwise sampling
By first taking a sample with the gouge with the largest diameter and subsequently with gouges having smaller diameters cross- contamination among the samples is avoided. The set is very suitable for profile research (nitrate research) in soils with a somewhat higher penetration resistance.

04.03 Gouge auger model P
This bi-partite gouge auger distinguishes itself from other gouges by the cylindrical tapered cutting head at the bottom side of the gouge that, when the auger is pushed into the soil, cuts a cylinder shaped piece from the soil. As a result the auger does not need to be revolved around its axis after being inserted. This type of auger is particularly suitable for soil mapping because of its small diameter and the cylindrical cutting head.

04.06 Gouge auger set for top layers
After analysis of the samples taken with this set it is possible to determine a fertilization program. These gouge augers are pre-eminently suitable for sampling of the top layers of arable land, in particular for a nitrate- or a fertilization research, etc.

05.03 Grass plot sampler, small

05.10 Grass plot sampler, large
These stainless steel gouge augers with different dimensions consist of a steel auger pipe, a collecting bucket and a stick with a steel handle. Because of the conical shape of this pipe the sample is easily pushed toward the collecting trough when the next sample is taken. The grass plot sampler is particularly suitable for research in grassland farming but also in horticulture and for the Parks and Public Gardens Department.

The Building Materials (Soil and Surface Waters Protection) Decree for the Netherlands came into effect on 1 July 1999 for the use of stony materials and earth in construction and other works. The purpose of the Decree is to prevent the pollution of surface waters, groundwater and soil. Harmful substances leaching form stony building and other materials or contaminated earth can cause pollution. The Decree is in line with the general thinking on quality and quality control. It includes rules, regulations and standards which guarantee a specified quality of building materials, including earth.

20.06 Set for Building Materials Decree
The set consists of an auger set, measuring- and sieving equipment and sampling shovels.

Measuring- and sieving equipment
The samples can be sieved with the stainless steel sieves. For position determination and measurement of the building materials to be sampled use can be made of the surveying instruments which are included in the set. For distance measurements the synthetic measuring tape with a length of 50 metres can be used. The included lightweight, liquid-damped clinometer has an accuracy of 5 degrees on the top scale and 1 degree on the precisison scale. On the percent scale the clinometer has an accuracy of 1% from 0-70% and 2% from 70-150%. For determination of position a mirror compass is also included in the set. The included electronic balance has a capacity of 12000 g and an accuracy of 1 g. and a dust and splashwater proof housing.

Sampling shovels
The included sampling shovels (with extra grip) are specifically suited to sample loose discharged materials (granulates). The dimensions of the sampling shovels are resp. 12x12x12, 18x18x18 and 24 x24 x 24 cm.

Soil research is a very important aspect in the planning and execution of agricultural- as well as civil engineering and operations. In order to make the soil research as comprehensive as possible the following studies must be made with regards to:
· The build up of a soil; i.e. determining the composition, the thickness and the position of the various strata
· The soil properties; measuring the permeability, the filtration capacity, the bearing capacity, etc.

The build up of a soil and strata is determined with the use of augers. The hand auger is generally used for not too deep bore-holes. Hand augers are extremely useful for soil research. Investigating the properties of a soil either takes place in situ, or in the laboratory with the aid of soil samples. For the execution of a universal soil classification in situ various articles have been included in our program.

08.15 Soil sampling and classification set
The soil sampling and soil classification set has been assembled to allow for in situ investigation as much as possible. The standard set is suitable for investigations down to a depth of 2 meter.

08.11 Soil colour charts
Determination of a subgroup in the soil classification system is based among other aspects on colour differences. The colour of the soil is determined by comparing the sample with standard soil colour charts (Munsell). Soil colour charts are available in a Japanese (12 colour charts) and American (8 colour charts) version.

99.07 Geologist hammers
Geologist hammers can be obtained pointed or with a blade. They are used to obtain a rough indication of the hardness of soil or rock, the removing of fossils, scraping stones, emptying gouges and many other applications.

The soil column cylinder auger has been developed to take undisturbed soil samples. This allows for a fast insight in the built-up of the soil profile, the possibilities for a root system, etc. The more insight in these matters, the more effective fertilization and treatment of the soil can be done.

05.07 The soil column cylinder auger
To execute general examination of the soil profile another method has been developed where samples are taken from the soil applying the soil column cylinder auger.

Applying this system it is possible to take undisturbed samples with a length of 100 cm and a diameter of 93 mm, without digging a profile pit. The soil column cylinder auger is hammered into the soil applying a gasoline driven mechanical hammer (on special request an electrical driven hammer). The cylinder has a removable side, among other things, for checking and/or for sub-sampling of the soil column. In the standard set among other things there are a gasoline driven mechanical hammer, a stainless steel soil column cylinder, a hand auger, an extraction system and sample gutters.

Applications
The soil column cylinder, among other things, can be used for:
· Structure description of the soil (also the very thin layers)
· Investigation of the root to gain insight in the possibilities for a root system considering depth and intensity
· Determination of contents and density of the soil using undisturbed samples
· Researching the moisture content and the concentration of dissolved substances in long
 running field studies
· Studies after the flow behavior of water and dissolved substances in for instance soils where very preferential moisture transport occurs
· Archeological research

Drilling a bore hole is often combined with sampling and describing a profile. If both these activities are not necessary during the drilling procedure then drilling can be executed fast and efficient applying the so- called lost cone drilling method. Eijkelkamp Agrisearch Equipment developed a manually controlled set using an electrical percussion hammer to hammer the lost cone and the accompanying casing into the soil.

10.100 Lost-cone drilling set, standard set for drilling according to the lost-cone method
The specially designed lost cone is hammered into the soil using an electrical percussion hammer, which is placed on the casing. The lost cone produces a very straight bore hole that is slightly wider in diameter then the casing in order to reduce the friction. This procedure makes it easier to reach greater depth and the friction on extracting the casing is limited.

On reaching the desired depth a filter tube can be lowered through the casing or sensors can be left in the bore hole. Subsequently the casing can be extracted using the 2-person operated rod puller in combination with the universal casing and rod pulling clamp.

Applications
The lost cone drilling method is successfully applied when placing monitoring well pipes with a small diameter, for environmental research. After drilling the lost-cone is left in the soil. This does not cause any environmental problems as the material used is present in the soil by nature.

Earth borings can be executed manually as well as motorized. In our delivery program two motorized soil auger sets have been incorporated for augerings up to a depth of 10 meter.

03.05.SA Motorized soil auger set with tripod and winch for boring above the groundwater level

03.05.SB Idem, for boring above as well as under the groundwater level

The two-stroke motor that is used in both sets is suitable for (almost) vertical borings. The machine is controlled by two operatives. The 3.0 kW (4.1 DIN PK) motor has sufficient power to execute a boring to a depth of up to 10 meter. During the boring continuous flighted augers made of high grade steel are used.

The set 03.05.SA contains continuously flighted extensions with bayonet fittings; the flighted extensions connect to the fligthed auger without interruption. The smooth extensions from the set 03.05.SB consist of a pipe with connections on both ends.

Applications
· Profile research for surveying  purposes, geological and mineralogical observations, sand exploration, foundation technology, etc. In many soils both above and below groundwater level
· Ground water research for availability and quality.
· The introduction of large monitoring well pipes and/or filter tubes in the ground; Also suitable for shallow water wells for drinking water in for instance developing countries or refugee camps.
· Because of the low weight and the small dimensions of the various parts the sets are very suitable for borings on locations that are difficult to reach.

Because of the mobility of the percussion drilling equipment and its ready capacity to solve problems, percussion drilling equipment has earned its place beside standard hand drilling equipment. If drilling has to be executed in hard soils, possibly containing layers of rubble and/or stones usually percussion drilling is applied.

Wedge-connection
The existing wedge connection is normally used without problems in all kinds of soil. The composition of the soil in the Netherlands is such that complaints about the connection are very rare. The gouges and the extension rods are connected using so called wedge connections. After both parts have been slid together they are connected using a wedge. The wedge is kept in place by a strong spring-controlled nipple.
With the wedge connection easy and quick coupling and un-coupling is possible.

Percussion drilling sets with wedge connection

04.18.SC Percussion drilling set for heterogeneous soils with gasoline powered percussion hammer Cobra TT
The standard set is equipped for drilling to a depth of up to 5 meter.

04.18.SD Percussion drilling set for heterogeneous soils with light electrical percussion hammer (HM 1400)

04.18.SE Idem, with heavy hammer (HM 1800)
Using these sets the percussion gouges are hammered into the soil using an electrically driven percussion hammer with resp. 31.7 and 55.3 Joule beating power. The advantages of these hammers are: no petrol vapors and exhaust gasses directly over the sample.

Percussion gouges can be used to take reasonably undisturbed samples from depth to about 10 meters, without the use of drilling liquid (sample suitable for chemical analysis). Thanks to the special design the beating power of the percussion hammer is passed on in an optimal way to the percussion gouges, resulting in a higher drilling speed. The design also enables easy emptying and cleaning. Depending on the soil type, drilling depth and desired quantity of sample one of various gouge types is chosen.

RD32-connection
With the RD32-connection extension rods and percussion gouges are screwed together using a coupling sleeve. The RD32-connection is used in firmer, dryer soils. The RD32-connection takes very little time to attach and take off. The RD32-rods connect together by means of a coupling sleeve, which means that the massive extension rods have the same diameter along the entire length, which makes them very strong.

Percussion drilling sets with RD32-connection

04.19.SC Percussion drilling set for heterogeneous soils with gasoline powered percussion hammer Cobra TT
The standard set is equipped for drilling to a depth of up to 5 meter.

04.19.SD Percussion drilling set for heterogeneous soils with light electrical percussion hammer (HM 1400)

04.19.SE Idem, with heavy hammer (HM 1800)
Using these sets the percussion gouges are hammered into the soil using an electrically driven percussion hammer with resp. 31.7 and 55.3 Joule beating power. The advantages of these hammers are: no petrol vapors and exhaust gasses directly over the sample.

For easy and ergonomical sound transportation of all kinds of field equipment Eijkelkamp Agrisearch Equipment has included some means of transport in the product range.

99.14 Fieldcart
You are also fully-mobile in the field with the collapsible fieldcart. The sturdy aluminium construction makes the fieldcart (with inflatable tires) very suitable for carrying all kinds of equipment in the field to a maximum loading weight of 150 kg. The cart is suited to transport packages with dimensions 120 x 56 cm. The cart, when folded (107 x 27 x 58 cm), takes up very little room, weighs only 15 kg  and can be easily transported in a station car.

99.15 Hand truck
For easier transport (on paved roads) of all kinds of material a foldable two wheeled aluminium hand truck is included in our product range. The hand truck has solid rubber tyres, a folded height of 73 cm and a carrying capacity

Construction of a well must always be preceeded by a detailed survey of the area in order to find the most suitable location. Before starting fieldwork, as much information as possible regarding the hydrogeological situation should be collected from existing reports, maps, etc. It is also important to gather information about: existing wells, hand dug holes or springs. The landscape features and certain types of vegetation also provide information about the geohydrological conditions in the area.

15.01.SA Surveying set for shallow wells, standard set for borings to a depth of 20 m
Eijkelkamp Agrisearch Equipment has developed a survey drilling set for site investigations. Survey drilling is started with the 10 cm auger. If the borehole collapses, which may happen below groundwater level, the casing tubes with steel screw thread sockets are lowered into the bore-hole and the drilling is continued through the casing tube by using the 7 cm augers or the bailer.

15.20 Test set for water wells, standard set for a depth of 20 m
When a promising aquifer has been found, a pump test lasting one hour and some simple water quality checks must be performed. This procedure greatly reduces the risk of a low yield and/or unsatisfactory water quality after construction. For this purpose one can use the aforementioned set. The test set in fact belongs to the surveying set (15.01.SA) and provides sufficient information upon which to base decisions as to whether or not the aquifer can supply sufficient quantities and quality of water.

Eijkelkamp Agrisearch Equipment has developed various sets for shallow water well drilling. When drilling deeper wells it may be necessary to drill in steps. A set can easily be upgraded for stepwise augering. In this way, the necessary well depth can be reached easier.

15.02.SA Water well drilling set, standard set to a boring depth of 20 m
The set is developed and used for the construction of hand-drilled wells in soils without very hard layers and with sufficient aquifer recharge, permitting small diameter wells. The maximum space for the filter is 108 mm diameter. Where the soil becomes less cohesive, the casing tubes are used to prevent collapsing of the auger hole. When reaching sand below groundwater level the bailers are used. When a layer of clay is reached again, bailing is stopped and drilling is continued inside the casing. If necessary, a tripod with winch may be used.

15.05 Water well drilling set, standard set to a boring depth of 15 m
The set is developed and used for the construction of hand-drilled wells in harder soils with sufficient aquifer recharge, permitting small diameter wells. The maximum space for the filter is 140 mm dia- meter.

15.07 Water well drilling set, standard set to a boring depth of 10 m
The maximum space for the filter is 200 mm diameter. A tripod with hand winch is an indispensable aid when using heavier drilling equipment. Augering is started with augers with a diameter of 18 cm. Reaming tools are used to widen the bore hole to 30 cm.

For areas throughout the world in which large groups of people live together on a permanent or temporary basis, and where sanitary conditions do not meet acceptable standards of hygiene, Eijkelkamp Agrisearch Equipment has designed a light, strong, portable latrine drilling set. The sets are ready-to-use sets for e.g. organizations whose task is to deal with disasters, etc. or for instance offer humanitarian aid, such as Unicef, UNCHR, Medicin sans frontiéres Red Cross, UNDP, etc.

15.12 Latrine borehole drilling set, standard set to a depth of 10 m
Based on experience with hand drilling sets for water wells, a drilling set is constructed with a basic drill diameter of 15 cm. Once a hole has been drilled to the desired depth, it is possible to widen the holes to a 45 cm diameter using reaming tools. Due to the special construction of the reamers, this procedure requires less effort than drilling a 45 cm diameter hole.

The fitting of a round cover over the latrine is recommended so that in the event of re-use, this cover can be rolled to the new latrine. We are happy to offer suggestions upon request however the fact that local solutions

For soil drilling and sampling under the groundwater level or in non-cohesive soils casing tubes are used to avoid collapsing of the bore hole. Casing tubes are also used when placing monitoring wells or groundwater sampling tubes, or when drilling wells. In the program of Eijkelkamp Agrisearch Equipment various casing tubes have been included.

The casing tubes have been fitted standard with left-hand screw thread. Drilling is usually a clockwise action, the casing tube threading must therefore be anti-clockwise as otherwise the auger would loosen the casing tubes as soon as it gets stuck, which would then cause the loss of the casing tube or the casing shoe. The casing shoes are provided in two designs: one with slotted notches in particular for use in clay and with welded notches for other types of soil.

25.09 Synthetic casing tubes and accessories, diameter 90 mm
All synthetic casing tubes have been manufactured of impact-resistant plastic (so called ABS) and have been fitted with steel screw thread sockets. The length is 1 m. They have been fitted with left hand, coarse, round, inside screw thread. An O-ring on the screw thread socket seals it for fine sand. When turning in the casing tubes, the casing shoe with the slotted notches protects the lower tube and simplifies the turning in of the casing tubes.

25.12 Synthetic casing tubes and accessories,  diameter 125 mm

25.16 Synthetic casing tubes and accessories,   diameter 160 mm

25.22 Steel casing tubes and accessories, diameter 220 mm

SonicSampDrill is a unique concept for drilling and sampling that is characterised by speed and quality while causing next to no inconvenience to its environment or disturbance of the soil. Eijkelkamp Agrisearch Equipment already has experience with the Sonic which was originally designed for seismic research since 1995. These days the advantages of the SonicSampDrill are also appreciated in geological and environmental technology. At the same the Sonic's speed and quality make it increasingly attractive to - for example - the archaeological market. Obviously more possibilities are waiting to be discovered and developed. With the SonicSampDrill we can make sure that your opportunities in the market will take great strides when it comes to speed and quality.

The system
At the heart of the sonic drilling system are the 2 ex-centres that are driven by high-speed hydro engines. The high frequency vibrations that are generated in this way are transferred in an efficient way to the drilling rods. This then has the effect of causing the first layer of surrounding soil around the borehole and drill string to become fluid. This process reduces the friction so that the Sonic bodies are able to rapidly penetrate sandy, gravely soils and clay.

Drilling Motor

The Sonic is also fitted with an integrated drilling motor enabling the drilling rods to be coupled or disconnected in no time. As soon as the desired depth has been reached with the drilling rods and the work has been carried out, the drilling rods need to be retrieved from the soil. At this point the special pulling wrench developed for 63 mm tooling can be attached to the Sonic with the use of an attachment. The hard steel fingers of the pulling wrench automatically grip behind the coupling. There is no manual screwing required for either coupling or disconnecting. If the hauing up is not managed by the machine itself, simply set the Sonic going. This helps to retrieve any drill string from any depth out of the soil. This is a significant advantage over a method such as hydraulic hammering, for instance.

Applications SonicSampDrill system
Placing of all types of sensors
Placing of Direct-well filters
Percussion gouge sampling

Sampling with high-grade quality using the Aqua-lock method (for instance for archeological purposes, sand dredging wells, filtration research for drinking water, geophysical research, prospecting for gold veins)

Placing of seismic explosive charges in the soil
Placing aeration - and / or rinsing hoses for remediation projects
The extension of the possibilities (depth / diameter) of cone penetration test machines

Sampling with Aqualock
The Aqualock is a patented sampling methoud that really comes into its own when used in conjunction with the Sonic drill module. Th sampler that comes in 2,3 or 4-metre lengths is dropped to its required depth at the same speed as with the lost cone method. For the penetration the space within the Aqualock sampler is filled with water which keeps the piston down at the bottom end. There is no drilling cone involved, therefore. When the required depth has been reached, the water is allowed to escape towards the drilling rods above. The sonic vibrations make it possible to achieve a nice conre where in the cse of homgeneouws soil types only the outer layer (1 to 2 mm) is visibly affected by the vibrations. Samples can be taken from clay as well as from (coarse) gravely sand. The sampler can be lowered down the previously drilled hole and at the new depth another sample can be taken. This involves repeatedly inserting and extracting the drilling rod but the sampling is achieved very easily and rapidly with this method. Finally, with the aid of the water the sample is pressed out of the sampler into a trough or a plastic liner.