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Title: An improved tri-tube cryogenic gravel sampler.
Author: Everest, Fred H.; McLemore, Carl E.; Ward, John F.;
Source: Res. Note PNW-RN-350. Portland, OR: U.S. Department of Agriculture, Forest Service, Pacific Northwest Forest and Range Experiment Station. 8 p
Publication Series: Research Note (RN)
Description: The tri-tube cryogenic gravel sampler has been improved, and accessories have been developed that increase its reliability and safety of operation, reduce core extraction time, and allow accurate partitioning of cores into subsamples. The improved tri-tube sampler is one of the most versatile and efficient substrate sampling tools yet developed.
Keywords: Forestry equipment, stream environment, sedimentation
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Everest, Fred H.; McLemore, Carl E.; Ward, John F. 1980. An improved tri-tube cryogenic gravel sampler. Res. Note PNW-RN-350. Portland, OR: U.S. Department of Agriculture, Forest Service, Pacific Northwest Forest and Range Experiment Station. 8 p
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