Martin J. Hogan:
the way out
Martin J. Hogan:
slope with passage
Martin J. Hogan:
hole created so tools can be passed through levels
Martin J. Hogan:
end of the line, 1400ft into level 1
Martin J. Hogan:
end of the line, 1400ft into level 1
Martin J. Hogan:
safe passage?
Martin J. Hogan:
slope mining
Martin J. Hogan:
mine drill
Martin J. Hogan:
a hole that keep going underwater at the bottom of the first 100 stair descent
Martin J. Hogan:
the underground tour begins
Martin J. Hogan:
predicament
Martin J. Hogan:
stacked
Martin J. Hogan:
cornered
Martin J. Hogan:
spaces spaced
Martin J. Hogan:
offset secrets
Martin J. Hogan:
birching around
Martin J. Hogan:
paper covers rock