Journal: Appendix. Reports |
Iz vsebine knjige
Zadetki 1–5 od 81
Stran 21
... drift mining . Though more expen- sive than hydraulicking , and yielding less profit , this system is doing fairly ... drifting system . RIVER - BED MINING . The river - bed mining operations are carried on in California on a more ...
... drift mining . Though more expen- sive than hydraulicking , and yielding less profit , this system is doing fairly ... drifting system . RIVER - BED MINING . The river - bed mining operations are carried on in California on a more ...
Stran 133
... drift formation varies in depth from about 15 and 20 feet near the hills , and more than 100 feet in the vicinity of Dwight Way and Shattuck Avenue . In some places in the hills , however , the drift formation has been penetrated for ...
... drift formation varies in depth from about 15 and 20 feet near the hills , and more than 100 feet in the vicinity of Dwight Way and Shattuck Avenue . In some places in the hills , however , the drift formation has been penetrated for ...
Stran 139
... drifts have been run on the 75 - foot , 200 - foot , and 300 - foot levels . The present owners started on the 400 - foot level , drifting to the south 217 feet , connecting by upraise with the level above , and stoping out this block ...
... drifts have been run on the 75 - foot , 200 - foot , and 300 - foot levels . The present owners started on the 400 - foot level , drifting to the south 217 feet , connecting by upraise with the level above , and stoping out this block ...
Stran 145
... drifts have been extended , and the motive power changed from steam to water , the machinery for the former , The ... drifting . underground is carried on entirely with machine drills , using different patterns . The mine employs seventy ...
... drifts have been extended , and the motive power changed from steam to water , the machinery for the former , The ... drifting . underground is carried on entirely with machine drills , using different patterns . The mine employs seventy ...
Stran 147
... drift extends 600 feet , and to the north 75 feet , showing a vein from 30 to 40 feet wide . On the 700 - foot level the drifts north and south are respectively 400 feet and 300 feet , with a vein varying from 15 to 60 feet in width ...
... drift extends 600 feet , and to the north 75 feet , showing a vein from 30 to 40 feet wide . On the 700 - foot level the drifts north and south are respectively 400 feet and 300 feet , with a vein varying from 15 to 60 feet in width ...
Druge izdaje - Prikaži vse
Pogosti izrazi in povedi
20 feet angle argillites average bedrock beds belt Blue clay bored bowlders cañon cement cent channel chloritic coal coarse contains copper cost country rock County Creek Cretaceous crushed deposits depth diabase dikes diorite distance district drift east extends feet deep feet in length feet long feldspar felsite fissure flowing foot wall Fork formation fossils free gold grade granite Grass Valley gravel ground Gulch hanging wall hills hoisting hornblende hydraulic inches iron land lava ledge limestone lode metamorphic metamorphic rocks mill mineral mountains Nevada City northeast northwest obtained outcrop patent Pelton wheel places porphyry portion present pump quartz ranch ridge river road rock sand sandstone schists seams serpentine shaft shale shoot shows side silver situated slate slope southeast southwest springs stoped strata stratum stream strike sulphurets sunk supply surface syenite thickness timber tufa tunnel Valley vein width
Priljubljeni odlomki
Stran 541 - All records of mining claims hereafter made shall contain the name or names of the locators, the date of the location, and such a description of the claim or claims located by reference to some natural object or permanent monument as will identify the claim. On each claim located after the tenth day of May, eighteen hundred and seventy-two, and until a patent has been issued therefor, not less than one hundred dollars' worth of labor shall be performed or improvements made during each year.
Stran 527 - An act granting the right of way to ditch and canal owners over the public lands, and for other purposes...
Stran 561 - ... at the time they enter cover as aforesaid, to give proper notice of their tunnel location, by erecting a substantial post, board, or monument at the face or point of commencement thereof, upon which should be posted a good and sufficient notice, giving the names of the parties or company claiming the...
Stran 561 - Recorder of the district, to which notice must be attached the sworn statement or declaration of the owners, claimants, or projectors of such tunnel, setting forth the facts in the case; stating the amount expended by themselves and their predecessors in interest in prosecuting work thereon; the extent of the work performed, and that it is bona fide their intention to prosecute work on the tunnel so located and described with reasonable diligence for the development of a vein or lode, or for the...
Stran 531 - All valuable mineral deposits in lands belonging to the United States, both surveyed and unsurveyed, are hereby declared to be free and open to exploration and purchase, and the lands in which they are found to occupation and purchase, by citizens of the United States...
Stran 561 - States governing their possessory title, shall have the exclusive right of possession and enjoyment of all the surface included within the lines of their locations, and of all veins, lodes and ledges throughout their entire depth...
Stran 533 - We are of opinion, therefore, that the term as used in the acts of congress is applicable to any zone or belt of mineralized rock lying within boundaries clearly separating it from the neighboring rock.
Stran 571 - The person entitled to the use may change the place of diversion, if others are not injured by such change, and may extend the ditch, flume, pipe or aqueduct by which the diversion is made to places beyond that where the first use was made.
Stran 531 - That as a further condition of sale, in the absence of necessary legislation by Congress, the local Legislature of any State or Territory may provide rules for working mines involving easements, drainage, and other necessary means to their complete development ; and those conditions shall be fully expressed in the patent.
Stran 539 - ... must distinctly mark the location on the ground so that its boundaries may be readily traced, and post in some conspicuous place on such location, a notice in writing stating thereon the name or names of the locator or locators, his or their intention to locate the...