Grace Walker Mine, Ottawa County, Oklahoma, USAi

Regional Level Types
Grace Walker Mine	Mine
Ottawa County	County
Oklahoma	State
USA	Country

Grace Walker Mine, Picher Field, Tri-State Mining District, USA

Grace Walker Mine, Tri-State Mining District, USA

The Grace Walker No. 2, Commerce Mining and Royalty Company, is located on a forty-acre lease forming the SE. 1/4 SW. 1/2 sec. 21, T. 29 N., R. 23 E. The mine was first opened in 1919 and the production from 1919 to 1928 was 23,599 tons of zinc concentrates valued at $938,047.68 and 3,436 tons of lead concentrates valued at $319,567.

The mine is being worked from two shafts, the No. 5 shaft located on the west side of the lease and the No. 6 shaft on the south central part. The mine workings at both shafts are operated at a level 240 feet below the surface, the ore-body forming an Irregular-shaped flat run. The mine stopes near the No. 5 shaft usually range from ten to fifteen feet high, but near the No. 6 shaft are somewhat higher, reaching to thirty-five or forty-five feet, the highest stopes being located to the southeast. The width of the stopes is quite irregular, ranging from fifty to three hundred feet. The ore is in typical jasperoid, the formation varying from relatively “tight” to much fractured rock with small openings and crevices. Minute crystals of barite were noted on galena in a small cavity.

A shallow cave was opened on a level with the top of the stope 300 feet northeast of shaft No. 5. The cave is a broad flat chamber about one hundred feet in horizontal extension and from one to three feet in height. The floor and ceiling of the cave consists of the typical jasperoid flint, the floor being covered with many good sized crystals of galena encrusted with coxcomb marcasite.

The shale in this locality reaches a thickness of fifty to seventy feet, and the ore is apparently in the lower part of the upper half of the Boone formation.