CONTENTS 



Page 



CONVERSION FACTORS, U.S. CUSTOMARY TO METRIC (SI) 6 



I INTRODUCTION 7 



II PRIMARY COMPONENTS 7 



1. Vibrator 7 



2. Tripod 9 



III SECONDARY COMPONENTS 11 



IV CORING PROCEDURE 12 



1. Intrusion 12 



2. Extraction 12 



3. Packaging 12 



V PROCEDURAL MODIFICATIONS 14 



VI FIELD TESTS 14 



LITERATURE CITED 15 



TABLE 



Equipment specifications 8 



FIGURES 



1 The gasoline engine power source 9 



2 A closeup of the quick fasten-release clamp 10 



3 The 14-foot-high tripod with step supports welded to one leg 10 



4 A closeup of the tripod headplate 11 



5 Removal of the extracted core from the tripod 



13 



6 Photomosaic of an opened core . 



13 



7 The modified coring procedure for collecting short cores 



14 



