CME Continuous Sample Tube System

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Bearing assembly in drilling position	Bearing assembly in raised position

Continuous Sample Tube System

High Quality Samples

The Patented CME Continuous Sample Tube System provides an exteremly positive method for obtaining full recovery, high quality soil samples. Since sampling is preformed in conjunction with the hollow stem auger drilling process, this system is fast and efficient. The sample tube positively does not rotate with the augers, so you get excellent, representative samples. This allows you to document the sample orientation and determine directional trend of fractures of contaminates.

Positively prevents sampler from rotating

The sample tube is connected to a string of hex rods that extend up through the augers and bearing assembly. A locking rod at the top of the string is attached to a horizontal locking plate. This plate fits between the feed pull-down rods and positively prevents the sample tube from rotating as the augers turn.

Downward pressure is transferred from the drill rotary box through a bearing assembly attached to the bottom of the spindle. The locking rod, which extends through this bearing assembly, can slide approximately 6 inches [15.2 cm] axially.

As drilling advances and augers and rods must be added, you simply uncouple an auger connection and raise the feed system 6 inches [15.2 cm]. The auger connection will separate, giving you access to the hex rod connection inside the auger column.

Positive Sample Retrieval

The CME Continuous Sample Tube System uses hex rods to push and retrieve the sampler. It has several advantages over wireline sampling systems that use cable to retreive the sampler. You can all ways tell the precise depth of the sampler in the hole because of the rigidity of the rods. Also, there's no latching mechanism to cause problems. And if you get in a bind while bringing the sampler out of the hole, you don't have to worry about broken cables and lost samples.

The hex rods can also be use with our hollow stem auger center hexagon drive system.

Effective in difficult formations

The CME Continuous Sample Tube System works well in many difficult formations such as glacial drift, hard clays and shales, lignite, peat, coal, mine tailings and loess.