=========================== FOLLOWING PSMSL DOCUMENTATION ADDED 11-Jun-1991
Grindstone          970/034 RLR(1969) is 10.1m below BM T.S.1(1959)
=========================== FOLLOWING PSMSL DOCUMENTATION ADDED 12-Jul-1993
Grindstone          970/034 RLR(1969) is 10.1m below BM T.S.1(1959)

