| 1862 - 510 pages
...that same abundance of ore which characterized the upper part. The working of the mine however tip to the present time, has been confined to the extraction...and patches occasionally aggregated into masses of much less- importance than the three principal ones. In the first few weeks' work in 1869, about 300... | |
| 1866 - 496 pages
...that same abundance of ore which characterized the upper part. The working of the mine, however, up to the present time, has been confined to the extraction...the mine may be found other masses, similar to those which have beeu excavated. Beyond theģe masses, in opposite directions to the surface, the ore becomes... | |
| 1866 - 978 pages
...extraction of theric: , •• which was in sight. Little or nothing has been done for discovery.scunnot be said how near to the present floor of the mine may be fc*1ģ other masses, similar to those which have been excavated. Beyond ~ masses, in opposite directions... | |
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