within a fixed was in the latter part of 1896, and from that time until from the second air-lock to the" working face. The diaphragm located in the axis of the ray of light and cables are driven at a speed of 300 feet a minute and 1902, when orders were given to proceed with con- struction, the… … question, but this is proved by braced. Under the shelter of this the evidence of residents of the apron, which is heavily shored vicinity, who are strictly re- up, the workmen are able to pass liable. forward of the shield and drill The dam in question was dis- and blast out the rock below it.…
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