 | 1903 - 988 Seiten
...about 3,000 feet horizontally and to a depth of 1,<HX) feet, but no ore was found below the 1,000-foot level. This vein, which is the largest and the most...levels of a mass of angular rubbish, derived from the walls of the fissure, and in places cemented by quartz, in other places still retaining its original... | |
 | Samuel Franklin Emmons - 1903 - 462 Seiten
...branches. It has been developed for a distance of about 3,000 feet horizontally and to a deptli of 1,000 feet, but no ore was found below the 1,000- foot level....levels of a mass of angular rubbish, derived from the walls of the fissure, and in places cemented by quartz, in other places still retaining its original... | |
 | Geological Survey (U.S.) - 1903 - 464 Seiten
...about 3,000 feet horizontally and to a depth of 1,iJOO feet, but no ore was found below the 1,000-foot level. This vein, which is the largest and the most...levels of a mass of angular rubbish, derived from the walls of the fissure, and in places cemented by quartz, in other places still retaining its original... | |
 | Joseph Barrell - 1907 - 242 Seiten
...3,000 feet horizontally and to a depth of 1,600 feet, but no ore was found below the 1.000 foot leveI. This vein, which is the largest and the most productive...levels of a mass of angular rubbish, derived from the walls of the fissure, and in places cemented by quartz, in other places still retaining its original... | |
 | 1914 - 1346 Seiten
...and the former presence of the fragments is only recognizable by the outlines of the banded quartz This vein, which is the largest and the most productive...levels of a mass of angular rubbish, derived from the walls of the fissure, and in places cemented by quartz, in other places still retaining its original... | |
 | American Institute of Mining, Metallurgical, and Petroleum Engineers - 1915 - 878 Seiten
...and the former presence of the fragments is only recognizable by the outlines of the banded quartz This vein, which is the largest and the most productive...levels of a mass of angular rubbish, derived from the walls of the fissure, and in places cemented by quartz, in other places still retaining its original... | |
 | 1914 - 1136 Seiten
...and the former presence of the fragments is only recognizable by the outlines of the banded quartz This vein, which is the largest and the most productive...levels of a mass of angular rubbish, derived from the walls of the fissure, and in places cemented by quartz, in other places still retaining its original... | |
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This vein, which is the largest and the most productive in the district, consists in its lower levels of a mass of angular rubbish, derived from the walls of the fissure, and in places cemented by quartz, in other places still retaining its original character.... 