Gallup American Coal Company, 1930, Overview
The mine is known as mine number 5. It is opened up by two three compartment shafts. The main shaft through which the coal is hoisted in seven ton skips is 840 feet in depth. The air shaft, through which the men are lowered, is used to hoist the rock from the mine and to take timber and all material used into the mine. It is 777 feet in depth. Both shafts are concrete lined throughout. The mine is situate in Sections 4, 5, 28, 29, 32, 33, Townships 15 and 16, Range 18 West.
There are three workable seams of coal designated as No. 3, 3 1/2 and 5. The depth of the three seams from the surface varies from 683 feet to 765 feet. The direction of dip of seams varies but the general direction of the dip is given as northwest. The angle of dip changes from level to 13 degrees.
The mine is developed on the double entry, room and pillar system with 50 foot pillars. Rooms are driven on 60 foot centers to a length of 250 feet. The rooms are opened 10 feet wide for a distance of 20 feet and then widened out to 14 feet in width. The roof conditions vary through the mine. In some places is found good sandstone roof requiring but few timbers, while in other places a great deal of timber is required to sustain the roof.
The mine is ventilated by a Connellsville fan 6 feet by 12 feet with a rated capacity of 300,000 cubic feet of air per minute. At the present time it is running at a speed of 190 r.p.m. producing a water gauge of 3.4 inches and is circulating 108,-500 cubic feet per minute. The area of the intake and the return airway are 100 square feet each. The air is divided into four splits.
Stoppings are built of concrete and in some instances boards or brattice cloth are used for temporary stoppings. The doors are fireproofed and the construction such as to secure efficiency.
The fan is driven by an electric motor with power supplied by an independent line directly from the power plant.
Horace Moses, General Manager, Gamerco, New Mexico
Thomas Husband, General Superintendent, Gamerco, N. Mexico
Frank Gains, Safety Engineer, Gamerco, New Mexico
1. "GALLUP AMERICAN COAL COMPANY", Nineteenth Annual Report of the State Inspector of Coal Mines to the Governor of New Mexico, New Mexico, 1930, Page 29.
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