=========================== FOLLOWING PSMSL DOCUMENTATION ADDED 11-Jun-1991
Resolute            970/151 RLR(1964) is 14.6m below BM"Carrol"
=========================== FOLLOWING PSMSL DOCUMENTATION ADDED 19-Aug-2010
TGBM BM 4 1972 was referred to from 1975 onwards. The RLR factor remains the same at 5.999m.