The Tombstone epitaph., 1881-12-19
WEEKL Y MINING REPORT.
The Mines all Showing Good
 DcN elOpments,
DESCRIPTION OF THE GERARD MILL.
Ten Days will Add Twenty Stamps tO the Productive Capacity
 of Our Camp.
C frartt Mill.

that has been built in Tombstone, all the others, with the exception of the Hopkins mill 0 stamps) at Watervale, being located on the San Pedro The mill is of 20. stamp capacity, with 10 pans, 5 settlers and agltator. The location of the mill is in the north face of the round hill between the hOisting works and the office, and stands considerably above the level of the shaft, and distant therefrom in direct line about 150 yards. This location was chosen in order to utilize the deep ravine below for tailing reservoir. The ore will be run in cars on tramway up to the top of the mill ana be dumped into a large ore bin, from whence it will pass to the rock breaker and thence into the automatic feeders that deliver it under the stamps. From the stamps the pulp flows into the settling tanks, and thence in the usual method through the pans for amalgama- tion, the settlers to separate the amalgam from the pulp, and into the agitator where, by application of plenty of fresh water, whatever remaining quicksilver there may be in the pulp is washed out and saved From the agitator the tailings flow into the reservoir, where it will remain for months, anI may be years, to oxidize by contact with tine atmosphere and inter- mixture of the chemicals used in amalga- nation, thus fitting the pulp to yield up, in reworking, the small percentage of the precious metals that escaped in the first operation.
 The motive power is threatening en zine of S0-horse power. It was built by Frazer & Chalmers of Chicago. The steam is generated in two immense boilers set in solid brick masonry. The setting is the finest piece of masonry we have seen around Tombstone By the arrang- ment of concave ash.pit which opens into large sewer that debouches into the ravlne below the mill, whenever it becomes necessary to clear out the ashes in the pit a a stream of water is turned upon them and they flow away through the sewer without the least inconvenience or litter upon the hearth and no danger of communicating fire to the building.
 The most important improvement to which our attention was called by MT. Scott, superintendent of construction, is the Llewellen heater that supplies water to the boilers. This heater IS about 3 feet in diameter by 10 in height, and resembles an upright boiler. About feet from the bottom is cast grating with meshes about one inch in diameter upon which is piled small rock several feet high. At the bottom of the heater the exhaust pipe from the engine enters, filling the heater with steam. At the top, the water is in- jected In the form of spray upon the heated rocks and percolates through them to the point of discharge into the boilers. It is claimed for this heater that it economlzes fuel and prevents scaling in the boilers, which is so great an annoyance when the water contains any of the mineral saits Both claims are we'll founded, in our opinion. That it will work saving in fuel needs no argument to prove, and that the water falling Tn spray upon the heated rocks will yield up it's mineral constitu- ents, which will adhere to the rocks, seems perfectly philosophical. That such is the case, MT. Scott says has been attested by his personal examination of boilers that had been fed from such heater for ten months, and he found no signs of foul ing. The water leaves the heater at 2l0 degrees Fahrenheit, or two degrees below the boiling point.
 When this mill commences to run regu, larly the bullion output will be augmented by about $75, ,000 per month, and will give employment, at the mine and mill, to from 75 to 100 men, which will add materially to the business and prosperity of our city.
 Tombstone M. & M. Co.
 The Combination workings send to the mill 50 tons per day. The stopes in thls part of the mine look particularly well and bid fair to keep up their present yield for d long time. The Northwest workings are improving from day to day. A good deal of development work is being done at this point Ship four loads per week from this point. West Side main shaft is down 24O feet. At 7S feet have drift running both north and south along the ledge which, though not large, is uniform. The ledge is vertical SO far as developed. The last wagon sample gave 252 ounces to the ton. Ship two loads per week to the mills from this minc. At the Goodenough main works, are drifting on the 300 foot level, both eAst and west, to cut the ore bodies that exist above. The. stopes here look well and furnish two loads per day, which coulG he doubled if necessary with the additional labor of a few more men. The outlook for this company was never brighter. The development work is kept we'll ahead at all points Where six months ago it was hard work to keep the mills supplied, it is now done with ease, with reserves to draw upon far into the future
 Grand Central.
 Main shaft 4G0 feet Geep, being GO feet below the 400.foot level. For the last 60 feet they have encountered several small veins of ore, which indicates the near ap- proach to an ore body. The west cross-cut on the 3O0-foot level is in $50 feet, with in