the cenntral geophysical wire line logging project under contract No. SCM 89-2 between well surveys International ,INC., Hereinafter Refferd to as WSI ,and Simitomo coal mining Co., LTD., asigned for contactor undr N E D O, hereinafter rffered to as sumitomo,began on 24 jue 199 , and anded on 8 dsember 1989.