Bulletin of the American Institute of Mining Engineers, Issues 109-112The Institute, 1915 - Mineral industries |
From inside the book
Results 1-5 of 93
Page ix
... shaft , some 10 ft . deep , in the bottom of which he saw a number of frogs or toads which had fallen in and could not escape . Although his time was limited and the work ahead considerable , he insisted upon bringing a fence rail ...
... shaft , some 10 ft . deep , in the bottom of which he saw a number of frogs or toads which had fallen in and could not escape . Although his time was limited and the work ahead considerable , he insisted upon bringing a fence rail ...
Page 52
... the ore from the upper tunnels to the motor - haulage level . An underground shaft centrally located , equipped with a com- Stope Manway Manway Raise Manway Drift Main Raise Stope Drift 52 UNDERGROUND MINING METHODS OF UTAH COPPER CO .
... the ore from the upper tunnels to the motor - haulage level . An underground shaft centrally located , equipped with a com- Stope Manway Manway Raise Manway Drift Main Raise Stope Drift 52 UNDERGROUND MINING METHODS OF UTAH COPPER CO .
Page 53
... Shaft Scale Q 20'40'60'80 ' Upper Level Hoist EL.6983 Raise El.6883- Middle Level 4204 Shaft El.6733 SECTION 1-1 Motor Haulage Level- * pressed - air hoist , was used to hoist supplies. FIG . 1. - PLAN OF WORKINGS FOR ONE BLOCK OF STOPES ...
... Shaft Scale Q 20'40'60'80 ' Upper Level Hoist EL.6983 Raise El.6883- Middle Level 4204 Shaft El.6733 SECTION 1-1 Motor Haulage Level- * pressed - air hoist , was used to hoist supplies. FIG . 1. - PLAN OF WORKINGS FOR ONE BLOCK OF STOPES ...
Page 65
... character of the ore . The gen- eral practice of the field is to sink vertical shafts , generally on the foot- wall side , free from the liability of disturbance from TRANSACTIONS OF THE AMERICAN INSTITUTE OF MINING ENGINEERS.
... character of the ore . The gen- eral practice of the field is to sink vertical shafts , generally on the foot- wall side , free from the liability of disturbance from TRANSACTIONS OF THE AMERICAN INSTITUTE OF MINING ENGINEERS.
Page 66
... Shaft Sinking The largest shafts in the district measure 13 ft . 8 in . by 9 ft . 6 in . within timbers , and are divided into three compartments - two for wind- ing purposes and one for ladderway , and to accommodate air main , pump ...
... Shaft Sinking The largest shafts in the district measure 13 ft . 8 in . by 9 ft . 6 in . within timbers , and are divided into three compartments - two for wind- ing purposes and one for ladderway , and to accommodate air main , pump ...
Other editions - View all
Common terms and phrases
12th level acid alloys andesite anneal antimony Ariz assay Asst average Bldg boiler Born bornite carbon cent Chairman chalcocite chalcopyrite CHARLES CHARLES F Chile clay coal coke Colo combustion Committee Copper covellite crystals curve dacite deposits diameter diorite discussion District drillings electric Engr etch feed flotation flow forging furnace gas compressors Genl Geological GEORGE gold grain heat hoist iron JOHN limestone load machine magnetite metal method mill minerals Mining Engineers molybdenum motor Natural Gas obtained operation orebody oxide paper PICRIC ACID plant Plate porphyry Present position pressure production Proposed pulp pumps pyrite recrystallization reduction rock sand School of Mines Secretary settling shaft shows silicon slime Smelt solids steam steel stibnite stope sulphide sulphur Supt surface temperature tests tion tons tungsten Univ valve Vice-Chairman WILLIAM York Meeting Zinc
Popular passages
Page 306 - A, B, C, D, E, F, G, KI, J, K, L, M, N, O, P, 0, R, S, T, U, V, W, X, Y, Z a, b, c, d, e, f, g, h, i...
Page 265 - Water and oil, and still more strongly gas, may be classed by themselves, if the analogy be not too fanciful, as minerals ferae naturae. In common with animals, and unlike other minerals, they have the power and the tendency to escape without the volition of the owner. Their 'fugitive and wandering existence within the limits of a particular tract is uncertain,' as said by Chief Justice Agnew in Brown v.
Page 180 - The American Society of Civil Engineers, the American Society of Mechanical Engineers, the American Institute of Electrical Engineers...
Page 756 - Property and law are born together, and die together. Before laws were made there was no property ; take away laws, and property ceases.
Page 760 - The cost of reproduction method is of service in ascertaining the present value of the plant, when it is reasonably applied and when the cost of reproducing the property may be ascertained with a proper degree of certainty. But it does not justify the acceptance of results which depend upon mere conjecture.
Page 753 - ... escape and go into other land or come under another's control, the title of the former owner is gone. If an adjoining owner drills his own land and taps a deposit of oil or gas, extending under his neighbor's field, so that it comes into his well, it becomes his property.
Page 755 - From these passages it is evident; that the right of acquiring and possessing property and having it protected, is one of the natural inherent and (inalienable rights of man.
Page 271 - But whilst there is an analogy between animals ferae naturae and the moving deposits of oil and natural gas, there is not identity between them. Thus, the owner of land has the exclusive right on his property to reduce the game there found to possession, just as the owner of the soil has the exclusive right to reduce to possession the deposits of natural gas and oil found beneath the surface of his land. The owner of the soil cannot follow game when it passes from his property; so, also, the owner...
Page 279 - Viewed, then, as a statute to protect or to prevent the waste of the common property of the surface owners, the law of the State of Indiana which is here attacked because it is asserted that it...
Page 435 - DISCUSSION OF THIS PAPER IS INVITED. It should preferably be presented in person at the New York meeting, February, 191(5, when an abstract of the paper will be read.