Mine Milling Metallurgical Treatment of Sulphurets Page 137



	TBEATJIEXT OF SULPHUEET OEES AT CHAEACTEEISTIC MIXES. 129 During this time, and previously, many unsuccessful experiments for the treatment of sulpliurets were made.¹ In 1888, Mr. A. Thies took charge of the Haile mine. He operated the 20-stamp mill until the mine was sufficiently developed to warrant a larger plant. At this time a 2-barrel chlorination plant was added and increased later on to 3 barrels. In 1889 the Blake mill was changed to a 60-stamp, back-to-back mill, with 20 concentrators. DESCRIPTION OF THE MINE WORKINGS; HAILE MINE. The present workings consist of the Cross (a continuation in depth of the old Haile and Flint pits, H, fig. 21), and the Beguelin (G, fig. 21) mines. The Bumalo, Bed Hill and Chase Hill pits (E, A and L, fig. 21) have not been worked for some time, although in the first there' has been considerable underground work. "Work at the Cross mine was stopped in 1888, and all attention was concentrated on the Beguelin (formerly Blauvelt) mine. Fig. 22 gives a plan and vertical section of the open pits and some of the underground workings of this mine. The old workings consist of some shallow open pits and 3 perpendicular shafts, one 70 feet deep in ore, one 54 feet deep in the diabase dike (9, fig. 22), and one 70 feet deep in the footwall slates on the southwest side of the dike (not shown). The first of these was transformed, from a depth of 60 feet downward, into an inclined shaft (4, fig. 22), and sunk in the ore-body to a depth of 195 feet. This shaft was rigged with a self-dumping skip, crusher and ore-bin situated over the railroad tracks which had been extended to the mine. At 60 feet a drift was run in a northeast direction until the diabase dike was reached. Meanwhile sinking was continued in the shaft to 120 feet. From this level drifts were run and connections w⁷ere made with the 60-foot level, which prepared the ground between them for stoping. At 180 feet a similar drift was run to the dike and connections made with the upper levels in such a manner that the ore from the 60-foot would fall to the 180-foot level, and from there be hoisted to the surface. At 180 feet a drift Avas started in a southwesterly direction, encountering at 64 feet a dike 125 feet thick, through which the drift was continued to a distance of 600 feet from the shaft. At a depth of 70 feet a similar drift was run and the ore-body beyond the dike was prepared for stoping by connecting these two drifts by several raises. At the present day all ore on the west side of the dike has been stoped out to the 180-foot level. To the northeast of the shaft a considerable body ¹ "Gold Mining-in South Carolina," by E. G. Spilsbury, Trails. Am. Inst. Mill. E)ij/... xii. 99. " Notes on the General Treatment of the Southern Gold Ores and Experiments in Matting Iron Sulphides," by E. G. Spilsbury, Ibid., XV.* 767. "Chlorination of Gold Bearing Sulphides," by E. G. Spilsbury, Ibid , xvi, 359. 9