000 "
Leaving 17,933.341 "
or 3,396 miles of heading yet to be made, of which 1,218.975 feet are
between the west end and the west shaft, and 16,714.366 feet between the
west shaft and east end of the tunnel.
The central shaft is down 583 feet, and well No. 4 is down 150 feet.
The progress for the month of November, 1867, was as follows:
East end heading 126.00 feet
West shaft, east heading 33.00 "
" " west heading 5.00 "
West end 20.00 "
--------
Total for the month of November 184.00 "
Thirty feet of brick arch were completed during the month at the west
end, making a total of 516 feet of brick arch completed to date.
The progress for the last six months has been as follows:
East end 711.00 feet
West shaft, east heading 216.00 "
" " west " 288.
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