Bisbee daily review., 1917-04-22

prove 10 be similar to the outwash on
 the east slope of the Dome Rock
 mountains and in the Plomosa plac.
 cers. where the material is firmly ce.
 mented with calcium carbonate and
 requires crushing in order to free the gold.
 ] In Goodman Wash, below the Good man tank. deposit of calcareous tufa | several feet thick is to be seen. The ground stands sufficiently well to per
 nit the sinking of shafts without the use Of timber. The wash is readily
 worked in dry-washer machines, the
 only requirement being that the ground must be dry. The. gold. is
 rough and angular. and. particles of
 iron cling to some of the nuggets. Mag
 netite is always found in the concen-
 trates, and powders of magnetic, the largest weighing several pounds are
 frequently found on the surface. ... . In March, 1910, the government re- established the south boundary lire
 of the Colorado River Indian reserva-
 tion, and according to the lines placed
 them back in the La Pax Arroyo. This
 permitted mining to once more be re- stunned in that section, and the oppor- tunity has duly been taken advantage
 of.
 One of the principal mining com
 panies now operating in that section
 is the New La Pax Gold Mining com- pany, which is the largest individual holder of placer ground in the dis trict. This company owns 1546 acres of placer ground, lying in the western border of the Dome Rock mountains about seven miles northeast of Ehren- berg and twelve miles from Blythe. The formation in the locality of the New La Paz Gold Mining company's property is in general made up of micacious granite and schist and many beds and plugs of qusrtzite, also some volcanic lime on the extreme of the mountains. The schist is interwoven with many stringers. of. goId-bearing quartz, which by erosion and disinte- grafton. furnished the gold which is now found in the gold-bearing gravel beds.
 There are seventy-four shafts sunk on the property into the gravel to a depth of from five to forty-five feet. None, save in one instance, was put down to bedrock. The average depth to bedrock is estimated at about 50 feet On tbe h;1ba. ora,,d ,.,l..-L .k. company proposes to work by the hy- draulic process, the bedrock comes much closer to the surface.
 The result of recent sampling shows an average value of S216 per cubic yard in free gold which amounts to and the total including the black sand would be Sl1.SOO,44S.
 The black sand which is found in all portions of the property has a value of S2S.50 in gold and S14O in | silver to the ton. By actual test made l from ninety-One samples it was found | that every five hundred cubic yards of | gravel contains one ton of black sand. | In the 5.300.000 cubic yards of gravel l in these holdings, there would be 10.- | 500 tons of black sand worth $312.- l4S. This black sand will be saved | without one cent additional cost to the | 
 There are little or no indications of gravel or sticky clay in placer mining and especially where the process of working Is by the by iraulic system.
 The company proposes to prosecute operations by the hydraulic method. and to this end reservoir has been on the top ot an adjacent hill. This reservoir is Of sufficient