Rental Rates: (based on single or double occupancy price/ two-night minimum stay)

$175

"In 1892, "The Doris Mine", was located on Hong and Derry Hill in Iowa Gulch, Leadville, Colorado. This mine was added to the additional producing mines during the past years. In six months, The Doris Mine, netted its fortunate owner, Mr. H. Mamlock, the snug sum of $17,000. The ore is an excellent carbonate, running well in gold. A Sullivan diamond prospecting drill is used by this company."

"These machines are operated by steam, compressed air or electricity, and are made in various designs suitable for surface or underground work. The advantage of this modern method of prospecting is the vast saving of time and money as compared with the old and more expensive method of driving drifts and cross-cuts, or sinking shafts to determine the location of mineral deposits. They bore a hole one and a half to two inches in diameter in any angle or to any depth desired, removing a "core" or cylindrical section of the formation penetrated, which affords perfect samples for assays. This drill takes about three amperes at 440 volts, as an average, with a short drill rod, about four amperes when running with 150 feet of drill rod, and a maximum of eight amperes at full speed, in exceptionally bad ground. The speed of drilling was given as forty-five feet per day of twenty hours, as an average of a five months' run. The cost of drilling, exclusive of the cost of power, was put at 45 cents. The operating expenses of the plant are about $12 per month per horse power, or 2 cents per horse power per hour, figured on a basis of twenty-five horse power. The wages of the two attendants comprise, of course, almost the entire cost."