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[CURTIS M. BELDEN RMCMI PRESIDENT 1999-2000 on behalf of the RMCMI Board of Directors and Officers of The Rocky Mountain Coal Mining Institute cordially invites you and your family to attend the 96th Regular Meeting and Convention to be held June 25 thru June 27,2000 Durango, Colorado]

Jan 1, 1999

[Adams, Douglas K General Electric Co., P.O. Box 2331, Denver 1, Colo. Adams, Kenneth L Peabody Coal Co., 301 N. Memorial Dr., St. Louis, Mo. 63102 Ahlborg, William Joy Mfg. Co., 1400 17th St., Denver, Colo. Allen, Dr. Harry C U. S. Bureau of Mines, Washington, D. C. 20242 Anderson, Robert Mine Safety Appliances Co., 1881 West N. Temple, Salt Lake City, Utah Archer, Bryan J., Jr Peabody Coal Co., 421 Glenwood St., Grand Junction, Colo. Arentzen, E. M W. RD 1, Charleroi, Pa. Arentzen, L. E. Lee-Norse Co., 6030 55th Pl., Arvada, Colo. Arentzen, Rolf F Lee-Norse Co., Box 582, Charleroi, Pa. Arnston, E. K Standard Oil Div. American Oil, Rt. 1, Box 504, Golden, Colo. Artis, Cliff E Big Horn Coal Co., 247 Sherman Ave., Sheridan, Wyo. Atchison, Lee Atchison Construction Co., Drawer D, Aztec, N. Mex. Audin, Clement, Jr Champion Coal Mining Co., Paonia, Colo.]

Jan 1, 1969

The Sixtieth Regular Meeting of the Rocky Mountain Coal Mining Institute convening at the Stanley Hotel in Estes Park, Colorado, was declared in session at 10:10 a.m. by Past President Mike Zakotnik, Jr., General Superintendent, The Kemmerer Coal Company, Frontier, Wyoming. Mike introduced Claude P. Heiner, President, Minerals and Development Corporation, Salt Lake City, Utah; and President of the Rocky Mountain Coal Mining Institute. President's Address Members of the Rocky Mountain Coal Min- ing Institute, guests, visitors and friends: I feel this is a distinct honor to talk to you on the occasion of this 60th regular meeting of the Institute. I once assumed this would be the Institute's 60th birthday, but later found that the first meeting was held in the State Capitol at Denver on November 12, 1912, at which time a comparatively small group of operators duly organized the Institute; a Mr. Weitzel of Colorado Fuel & Iron Company was then elected president and our late and dearly remembered Fred W. Whiteside, whose wife Gussie now carries Fred's work forward, was elected secretary. From Fred's records, early meetings were held semi-annually at rather irregular intervals, so that this 60th meeting is approximately the 52nd birthday of the organization and I am number 44 to serve as president. This latter development, I am sure, was conjured up last year by certain members at Glenwood Springs when I was absent. Anyway, I am honored and trust 'that these sessions will be both interesting and instructive in helping us on our way in the coal business.

Jan 1, 1964

Mr. O. F. Lewis opened the meeting at 9:00 a.m. lie announced that Stan Shuhart, had the following announcement. to make: Stan. Shubart: George Delamater of Fort, Lauderdale, Florida scads greetings to his friends here at the meeting. O. F. Lewis: Thank yon, Stan. This morning we will start our meeting by turning it over to a very distinguished gentleman. I'm sure all of you know him. He started his work career many, many years ago, but lie doesn't look nearly this old, and his energy belies this. From 1.910 to 1916 he was a chemist with the American Smelting & Refining Co. at. Garfield, Utah. From 16 to '17 he was a broker with J. A. Hogle Company at Salt Lake. From 1917 to 1948 he was a metallurgist, ore buyer, assistant manager and later general manager of the Utah department. ASRC at Salt Lake City; and also president of the Garfield Chemical Co. Since 1951 to the present. time he has been President and General Manager of the Independent Coal & Coke Co. and Vice President of the Western Rock Bit Co. He has held many, many honorary positions; former Chairman of the Board of Regents of the University of Utah, former President of the Salt Lake Winter Sports Association, Past President. of the Community Chest there, and is presently a Director of National Coal Association, a Director of the First Security Bank of Salt Lake City, Utah, and also a Director of the Hotel Utah.

Jan 1, 1965

Jan 1, 2006

Mr. Geo. B. Pryde, Chairman; Committee on Safety, Rocky Mountain Coal Mining Institute, Rock Springs, Wyoming. Dear Mr. Pryde: In accordance with suggestion in your letter to me of June 21, 1923, Mr. Roberts, Mr. Dalrymple and I had a meeting and attached find our contribution to the proposed August report of the Committee on Safety. You will note that we have confined ourselves to matters in connection with explosions and prevention of explosions, in coal mines. If the committee is to report on general safety in coal mines, including accidents from haulage, timbering, rock falls, electricity, etc., we would like to suggest that you ask other members of the committee to specialize on one or more of these subjects. Especially we believe it would be advisable to specialize as to precautions against electrical accidents with giving of data as to maximum voltage, precautions to be taken as to gas ignitions by mining machines at faces, best methods of placing power wires underground, etc.; also give information as to up-to-date safety installations, such as whistle devices notifying of disarrangement of ventilation or devices for quick cutting off of electrical power from mines under certain conditions; also give data as to efficient safety man cars on various pitches, etc. Yours truly, D. HARRINGTON.

Jan 1, 1923

By Thomas Collier

MR. PRESIDENT AND CO-WORKERS IN THE COAL INDUSTRY: I was requested by our president to prepare a paper on Longwall Coal Mining, to be read before this honorable organization. There are three general systems of Longwall, Longwall advancing and Longwall retreating, and the Nottingham system which is worked in England and South Wales. In Fremont county, where I am employed, the Colorado Fuel and Iron Company are working their mines on the advancing system. The face is started generally from the bottom of the shaft or other mine opening, or, at the outside of the pillar left to support the shaft or slope-bottom and advances toward the boundary of coal area. As the roads in this system are maintained by pack walls, it is sometimes called gob-roads system, and by these means the mine is opened up rapidly and consequently early returns are secured from the capital invested. By this method, there is no expense for narrow work, and a minimum amount of timbering of the roads is required. Now what I call ideal Longwall work is where there is about eight inches of dirt mining-and four and one-half feet of coal, .and when the entries and rooms will gob themselves, so that there will be no rock or dirt to haul out to the surface. But this is not the case in the mine I am in charge of. The entries and rooms will not gob themselves, therefor we have to haul the rock and dirt to the surface, which runs up the cost of production. Now the ideal roof in Longwall is composed of tough elastic and pliable strata that yield gradually by bending when the coal is removed, and throwing a sufficient weight or roof pressure on the coal face to break the coal when the same has been mined or undercut. Timbering should be done systematically, the coal well spragged before the miner starts to undermine the coal. Cogs or cribs are alright in their place, but I am not a believer in crib in Longwall working because they are too strong for the roof and do not leave the roof to squeeze .down gradually and break the roof around the crib. Longwall work requires particular skill on the part of the miner, and a familiarity with the conditions affecting room and pillar work, and a good room and pillar mail may not be successful in. Longwall work. A good Longwall miner realizes more than any one else the importance of being regularly at his place every working day. A day lost causes his place to fall behind the others which makes his work harder, and his daily output is further reduced by the amount of small coal that is liable to result from the excessive pressure where the face falls behind. The bad results are also felt by the miner working on each side of such place, as the roof pressure is often insufficient and the coal does not break as well as when the face is kept in a uniform line.

Jan 1, 1921

Jan 1, 1926

Jan 1, 1921

Jan 1, 1925

Jan 1, 1924

TABLE ONE Accidents occurring in the Coal Mines of Utah by fiscal years: [Deaths ........................ Permanent total disability ...... Permanent partial disability. .... Temporary disability: .......... 28 days and over 14 to 28 days ............... 4 to 14 days ............... Under 4 days ]

Jan 1, 1922

Jan 1, 1987

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Jan 1, 1995

By T. H. Butler

The two most talked of questions in the mining industry today are rock dusting and mechanical loading. The one as a matter of safety, and the other as a matter of economy, and both are of vital interest to the mining fraternity. Rock dusting and other safety methods will be dealt with by others at this meeting, so I will confine my few remarks to the matter of mechanical loading. I will not attempt to tell you what mechanical loaders are doing in the different mining fields throughout the country, or what they should do, but will endeavor to give you an outline of the work being done with mechanical loaders in No. 4 Mine of the Union Pacific Coal Company, at Hanna, Wye. In order that you may better understand and be in a position to follow me it will be necessary to cite the conditions under which we are working. and the type of loaders in use. The seam pitches from 14 to 17 degrees, and is normally 32 feet in thickness, and is overlaid with a soft sandstone roof. The panel system of working is used, planes being driven on the pitch, and rooms driven on the strike. Owing to faults being encountered planes are driven between the faults, and the. rooms on either side are in some instances 800 to 1,000 feet in depth. Rooms are advanced eight feet in height, and 32 feet in width, by hand loaders and .Toy mechanical loaders, and when driven to the boundary,, 18 feet of the remaining 24 is loaded out with Thew electric shovels, and six feet left to protect the roof. In January, 1916 the company installed a Type 1 Thew shovel, equipped with a 1 1/4-yard dipper, and in July, 1917, they installed a Type 0 Thew electric shovel, equipped with a 1-yard dipper, and in the year 1918 two additional Type 0 Thew shovels, equipped with a 1-yard dipper, were installed, making a total of four Thew shovels for this mine. The introduction of these shovels caused the employees much concern, and like all departures from the old methods of mining, met with indifference by some and open antagonism by others, so that for some time they results obtained were not satisfactory. However, by constant supervision and changes in the method of haulage the results obtained at present, while not entirely satisfactory, are much better and the production and costs are reasonably good. The Thew shovels in use are mounted on traction wheels with swivel axle and move. in all directions by their own power, and while the weight of each is approxi¬mately 20 tons, they are not as cumbersome as. one would think and are easily operated. The system used in working these shovels is to shoot the coal clown ahead of the shovels and maintain two tracks, two cars being used on each track so that shovel is loading on one track while driver is, changing cars on the other. When place is finished the shovel is run back to the first cross-cut by its own power and lowered to the next room with block and tackle, the roof coal in cross-cut being shot down to a height of 16 feet to allow passage of the boom. With better results from the Thew shovels we soon realized that it was necessary to find some method of developing rooms faster than was being done with hand loaders in order to keep the Thew shovels in working places, and in November, 1923, the company purchased from the Joy Machine Company two Type 4 B U Joy loaders, and the installation of same met with the same indifference and antagonism from the employees as did the Thew

Jan 1, 1924

Jan 1, 1983

[Participating Scholarship Colleges and Universities 148 Andalex Resources, Inc 99 Big Sky Coal Company 118 Canyon Fuel Company, LLC 100 Coal Age 141 Commercial Testing & Engineering Company 103 Continental Conveyor & Equipment Co 104 Copper Mountain Resort 139 Cove Shoe Co., Inc 116, 117 Dakota Coal Company 105]

Jan 1, 2000

Jan 1, 1938

Jan 1, 1929

Jan 1, 1979