From Specialty Devices, The VibeCore-D is designed for small boat operation. Powered by two 12 volt batteries.4", 3", and 2" cores Aluminum 3" core tube lengths from 2 to 20 foot for grain size and soil mechanics Stainless and plastic core tubes for trace metals and pesticides. Takes nearly perfectly undisturbed cores. Core tubes are easy to cut and sealed for transport and storage.
SDI Core Catchers for very soft or sandy sediments.
Great video. Nicely done.
gopherseeker 3 years ago
this has to be david's work. did you play the backing music also?
gopherseeker 3 years ago