Bisbee daily review., 1916-07-16
Copper Mine Exhibit, Erected
 Originally By The Late AL bert C. Watkins At Pana- na-Paci6c Expo. In Show
COMPLETE WORKING FROM SOUTHWEST MINE
Replica Of Stope Is One Of The Most Perfect Ever Erected In U. s. Of a Mod ernly Equipped Mine

WASHINGTON, July 15.-VisitOrs at the U. 5. National Museum in Washington are expressing much in- teTest m the new copper mine eN- hibit recently installed Dy the Divi- sion of Mineral Technology.
 This exhibit consists of what Is known as a stOpe from the Copper Queen mine at Bisbee, Arizona. one oi the celebrated copper mines Oi the world, and is a donation iIJm the operating company. It shows the method of procedure in this mine. which was opened in 1880, and has been a significant producer ever since. yielding around lU0.000.0O0 pounds of metallic copper. upward or a 100000 ounces of silver. S00.0OO pounds of lead and 20.000 ounces of gold an- nUaliy. further evidence Oi the enOrnous proportions which this mine has reached is indicated by the fact that the mine as a whole has more than 20 miles of railway track age underground.
 The National Museum exhibit is one of the stOpes or subdivisions. which make up the vast system of workings in the Copper Queen from which the million and odd tons of ore taken out Of the mine each year were obtained StOpins is the term applied = an actual mining process by which ore occurring in veins is removed from a mine after it has been rendered ac- cessible by the necessary preliminary excavation. namely the sinking of shafts and running of drifts: accord ingly a stope is one of the many units employed in this form of min ing In other words it is one of the individual working place or rooms in mine where the disgings is carried on.
 The stOpe on exhibition is not merely a model. but an actual piece of the real mine. removed l0dily. ore faces. timberins. chutes and all from its original setting to a room in the Division of Mineral Technology in the older National Museum building. Ac- cOrdinSly as the visitor passes through the entrance into the Museum mine he finds himself.tO all intents and purposes. in exactly the surroundings in which he would be placed were he to enter the Copper Queen mine cage at Bisbee. and descend the shaft hundreds of feet into the depths of the earth tO the working level and enter one of the stopes. The only difference is that he need not enter the dusty cage nor descend tO the bottom of the shaft: all that trouble and possibly no little fear is eiimin- ated. he merely walks through a door
 The stope in the Museum forms a room-like enclosure. with a roof of heavy blanks. walled in on two sides by solid ore. on the third by broken ore held back by a tagging of tim bers, and on the fourth by barren rock forming the boundary wall of the vein. The massive upright timhers support the Capping overhead. and protect the room thus formed from being crushed in by the tremendous weight above. To the left is seen the face of the ore where it is being drilled and blasted loose. Set up and ready for use there stands a air machine drill. together with the picks and snovels left by the miners. whS apparently have just ha the plank-walled chute into which the broken ore is shOveled and sometimes and alongside it. the man way" with a ladder by which the gain access tO this slope from either above or below. Down here also run the air pipes for oper- ating the drills. and through these passages the fresh air is forced to the miners on the working levels.
 Altogether keen sense of reality is felt. even by those familiar with mining operations; there in a corner hangs a miners jacket. his dinner pail and lamp. while below against the timbers lean his tools. just as
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