| | | |
Mar. 19, 1906.|May 28, 1906. | 70 | 58 | 0.8 |
| | | | |
| | | | |
| | | | |
{May 29, 1906.|July 3, 1906.[E]}| 208 | 1,206 | 5.8 |
{July 18, 1906.|July 31, 1906. }| | | |
{Aug. 12, 1906.|Nov. 23, 1906. }| | | |
{Jan. 15, 1907.|Feb. 5, 1907. }| | | |
{Feb. 17, 1907.|Mar. 21, 1907. }| | | |
| | | | |
Dec. 1, 1905.|May. 10, 1906. | 161 | 225 | 1.4 |
| | | | |
| | | | |
Feb. 1, 1907.|Sept.13, 1907. | 225 | 1,033 | 4.6 |
| | | | |
| | | | |
}Feb. 1, 1908.|Feb. 14, 1908. | 14 | 65 | 4.6 |
} | | | | |
| | | | |
}Feb. 15, 1908.|Apr. 14, 1908. | 59 | 524 | 8.9 |
} | | | | |
| | | | |
======================================================================

[Footnote E: Time and distance omitted while working
through timbered stretches.]

=======================================================
8
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Methods and conditions.
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Top heading and bench. Muck loaded by hand.

" " " " " " " "

Double heading and bench. Muck loaded by steam
shovel. Stretches aggregating 200 ft. narrowed
to about 25 ft. and later enlarged are included.

Excavation about 30 ft. wide. Top full-width heading
and bench. Muck loaded by hand. Steam shovel
not installed.

Excavation about 30 to 35 ft. wide. Top full-width
by hand and part by steam shovel.

Double heading an