Bisbee daily review., 1917-03-04
RESUMPTION OF
 MINING IN MEXICO
Continued From Page One)

Continued From Page One)
 of the one-dollar pieces, however. has been discontinued since 1890, and the only denominations now minted are the double eagle, eagle, half eagle and quarter eagle.
 It is practical impossibility to coin pieces weighing absolutely the amoun- ts assigned by law. At least it would hardly pay the government to have the hints exercise the great care necessa- ry The law allows a certain complete leeway. known as limit of tolerance. so that newly coined double eagles and 1 eagles may be under standard of full legal weight by as much as one-half grain (almost two cents), while maxi mum deficiency on new half eagles and quarter eagles is One-Cuarter of a grain (almost one cenD. The table be- law gives in grains the standard of full legal weight of the four denominations currently coined, tolerance allowed when new, and minimum legal weight of new coins:
 GA1huelAu AOAGAdhNG
 or legal allowed on legal weight weight each coin of new coins | Double eagle. ... 516.0 0.50 515.50 Eagle ...,.... 25S.O 0.50 25750 i Half eagle ...... 129.0 0.25 12S75 | Quarter eagle . 64.5 0.25 6475 When coins are placed in circulation they lose weight from wear and tear. but as ong as the deficiency does not exceed limit fixed by law. they will be accepted by the government in pay ment of taxes. etc, at face value or iull legal weight; otherwise they will be received only at actual weight. The maximum deficiency on account of abrasion the law thus recognized is one-fourth per cent of full legal weight of the coin for every year of it's life up to 20 years. A coin which has been n circulation five years can be short of standard weight by one-eighth Der cent, while one out 10 years can be 5hort by one-fOurth per cent. When a coin is 20 years old, the deficiency all lowed is one-half per cent, the maxi mum permitted. no matter how old the coin may be, and all further loss in weight must be borne by the holder. By actual experimentation the eovern. ment has discovered that average loss from abrasion amounts to only 1-6O per cent. of legal weight per annum.
 BUTTE & SUPERIOR. The announcement that the Butte X Superior Co. has begun work again at the Butte-New York pIoperty has led to the belief that the big zinc. pro- ducer has no intention of reducing it's output. The suit brought by the Elm Oriu Mining Go. seeks to take away from Butte & Superior rights to about one-iifth of the present available ore bodies where it is mining. If the com tention of the Clark forces should be upheld, il would necessitate the cult. inG down of production of ore from 50. oVU tons per month to 10000 tons in the district now operated.
 The development work done two years ago at the Butte-New York by the Butte x Superior showed that there was plenty of high grade zinc ores available there. Considerable drifting was done at that time on the colonel Sellers vein on the I2GO-foot level. This drifting has now been start. ed again. The Butte & Superior plans to push this work rapidly and develop the zinc ore bodies there without de lay.
 The Butte & Superior Co. controls the Butte New York and has a con- tract with it that will enable the for 'ner to practically utilize the entire ore output of the Butte New York This will more than make up for any possible reduction in output that would be caused fl the Clark. interests "Jl their contention.
 One of the draw backs to the devol. 1pment of the Butte-New York has ~een the limited hoisting capacity of he Butte Superior. It has had to dc. pend on the single Black Rock shaft ior all Its ore hOisting as well as low ering of materials, and the wonder nas been in butte that the shaft has jtood the strain put upon it.
 The new number shaft of the Butte & Superior is ROW completed O the 600-ioot level and will be in commission by April 1. The new big s-att known as No. 9 will be ready by June l. About 50 feet remains to be done to complete it down ro the l600-foot level and it will be completed to the 2OOO-foot level.
 These new shafts will enable the company 10 increase the output and also handle the development work on