Hole 40 (continued) 50'5" 62'4" 11'11" Gray to black shale as follows:- 50'5" to 51'4" Gray silty 51'4" to 52' Black to slaty 52' to 60'1" Gray to black silty 60'1" to 62'4" Black clay shale coal in basal part. 62'4" 62'9" 5" Gray semi-hard clay 62'9" 64' 1'3" Coal 64' 70'2" 6'2" Hard clay, as follows:- 19" Dark gray flinty block with scattered fine nodules. 8" Gray block, may be somewhat sandy or silty, some carbonaceous streaks. 47 33" Sideritic blocks. (Shows 'conglomeratic' structure in lower 16") Both fresh siderite and Fe bumps 70'2" 71'8" 1'6" Shaley block clay, very crusty (Fe bumps) 71'8" 74'1" 2'5" Dark gray shaley clay to clay shale with Fe bumps - may be a shaley block clay, but seems more of a true shale. 74'1" 76' 1'11" Sandy shale, mottled red and green + shot with seams of gray sandstone (May be large shale inclusions in s.s.) 76' 76'4" 4" Light gray s.s., inclusions of red + green sandy shale. Mercer? ? Manch Chunk ? (Reworked?)