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Jan 1, 1947

PRESIDENT OLIVER: May I have your attention, please, gentlemen? The Forty-Fourth Meeting of the Rocky Mountain, Coal Mining Institute is now In session. I want to say just a few words of welcome to all the delegates this morning, both old and new. There is a large group of men around here I notice who come to this meeting year after year, and it occurs to me that they must be getting something worthwhile out of these meetings, the renewal of old acquaintances, the making of new acquaintances, and the opportunity to find out what is doing in the technical end of the coal business, and what is new. So, we greet you enthusiastically and trust that you will find this meetnig on a par with all those which have gone before and. that each one of you will leave these sessions determined that you will not miss next year but will be back again. So, with that introduction, we will proceed with the business of the convention. As time is fleeing away from us, if there is no objection, I wil lentertain a motion to dispense with the reading of last year's minutes. Will somebody make that motion? MR. H: C. MARCHANT: I move we dispense with the reading of last year's minutes. (The motion was carries unanimously.)

Jan 1, 1948

A Joy Global Inc. Company [ ] ? Joy Global Inc. headquarters located in Milwaukee, Wisconsin ? P&H Mining Equipment surface mining equipment and support ? Joy Mining Machinery underground mining equipment and support

Jan 1, 2007

Saturday, June 28 A pre-convention activity kicking off the 93rd RMCMI meeting was a Saturday evening June 28 reception for all Mine Rescue participants, their convention registered spouses, professional evaluators and RMCMI Board of Directors. This was at Buddy's Run in the Sheraton Steamboat Resort, Colorado. An estimated 100 persons enjoyed the buffet: fresh vegetable erudite with ranch dressing, fresh fruit and cheese displays and silver dollar rolls filled with ham or turkey. Blue golf shirts and red caps and convention packets were distributed to each Mine Rescue team member. Evaluators received red shirts and blue caps during the reception. Meeters and greeters from the Reception Committee wore red RMCMI arm bands and were stationed at strategic hotel spots, answered attendee's questions and gave directions to the registration area. Convention packets were first distributed Saturday afternoon by Julie Cummings and Lorraine McDonald. Sunday, June 29 A 7:30 a.m. shotgun scramble kicked off the golf tourney at the Sheraton course for 145 golfers. Yes, 145! as Lois Egan, President Tom's wife, completed a five-some with Tom and their three sons. A continental breakfast preceded the tourney. Another 65 golfers began play at 1:00 p.m. making this a record number of 210 golfers! Julie Cummings and Loren Linville sold $2,620 worth of $10 mulligans to the golfers with proceeds to the scholarship program. [ ] Both golf tourneys were co-chaired by Dave Mallak and Gordon Merriam who distributed prizes at 4:30 p.m. Monday. Prizes were donated by Amax Coal Sales West, Inc.; Austin Powder Co.; BHP Minerals-Navajo Mine; Bucyrus International, Inc.; Commercial Testing & Engineering Co.; Empire Machinery Co.; Ingersoll Rand; The Jeannot Group, Komatsu Mining Systems; Long-Airdox Co.; Marston Environmental Inc.; MEGA Corp.; The P&M Coal Mining Co.; Scandura, Inc. and TerraMatrix. [ ] RMCMI registration was an all day venture headed by chair Julie Cummings and assisted by Pat Johnson. [ ] Nearly 40 persons met for a Chef Demonstration and wine tasting at the Sheraton at 11:00 a.m. Executive Chef Jacques Wilson prepared broiled achiote shrimp with cantaloupe, grilled duck stuffed blue corn pancakes with herb grained bread and fresh fruit meringues. Wilson shared his recipes with the group and appropriate wines were served with each course, all sampled by the attendees. The chef arranged an impromptu showing of the main kitchen following the demo. [ ]

Jan 1, 1997

Jan 1, 1948

By Ron Harper

Jan 1, 2006

By Wm. Moorhead

Safety Measures Employed at the Dawson Mines Preventive measures for eliminating and localizing explosions is a subject of special interest to Coal Mining operators at the present time. I shall endeavor in this paper to present the practical methods which have been developed at the mines of the Stag Canon Branch of the Phelps-Dodge Corporation, Dawson, New Mexico. Adobe Dusting Adobe is used for practically all dusting on the main haulage roads. It is obtainable in sufficient quantities adjacent to the mines. Loaded into railroad cars by a clam-shell loading crane, and transferred to the mine pit cars at the nearest available point, it is readily distributed along the motor roads by means of the mine locomotives. Of first consideration for adobe dusting is the preparation of the roadway. It is essential that all loose coal and dust be removed, at least to a depth of three or four inches below the top of the rails. The adobe, in a more or less moist condition is unloaded by hand from the pit cars and stored along the previously prepared roadway, to be later scattered to a depth of several inches over the floor, and over the ribs and roof such as is possible by the use of a shovel. The adobe soon loses its moisture and becomes pulverized. Due to the disturbance caused by passing motor trips, men and animals, the dust is effectively scattered along the ribs and roof of the roads. The velocity of the intake air aids materially in sustaining the suspension of this inert matter. Another scheme for distributing the fine dust in use is to chain the top of a pine tree to the rear of the trips, both empty and loaded. Dragging it along the motor roads stirs up the dust and aided by the intake air it is carried for long distances into the workings. The adobe is continually loosened and raked, all rock, coal, etc., being collected in piles and later loaded out in pit cars. One man is employed for each six thousand feet of entry. Dusting Main Return Air-Courses The air-courses are first thoroughly cleaned. All the loose coal and rock is loaded out, the ribs and roof washed down several times. Every five or six hundred feet, the stoppings between the main and return entries are broken through and small doors installed. Blowers are used to force the fine dust into the return air-courses through these openings. Thus suspended the dust travels a considerable distance before it is deposited on the floor, ribs and roof. The material used is chiefly adobe, sun dried, and screened on the outside. A two ton car load of this dust will cover several hundred feet of airway as very little loss occurs, often depositing from 2 to 6 pounds per running foot of entry. Methods of Insertion Blowers are used to force the dust into the main returns. One unit consists of a small Buffalo blower mounted on a truck with a two H. P. motor. A six-inch pipe is attached to the blower and runs the full length of the truck with a projection over the end. A hopper is built over the pipe and connected. Stove pipe or canvas tubing is led from the pipe through door in stopping. When the blower is started dust is fed into the

Jan 1, 1924

Jan 1, 1972

By Thomas Lien

Session 1 - 1 :45 p.m. June 27,1983 Session Chairman: Robert Diederich, RMCMl New Mexico Vice President MR. DIEDERICH: My name is Bob Diederich. I'm the Vice President of the Rocky Mountain Coal Mining Insitute from the state of New Mexico. I'm manager for the Navajo Mine down in Farmington, New Mexico and also project manager for a new mine that we're starling out called the LaPlata Mine in the same area. I'd like to introduce our first speaker, Tom Lien, who is the Director of Engineering, Western Division of AMAX Coal Company. He is responsible for mine engineering, environmental engineering, permitting, reclamation, planning, design and construction plant engineering, geology exploration, quality control and real estate for the western division. He joined AMAX Coal in 1980 as manager of preparation and quality control and was promoted to the present position in August of 1980. He has a BS in geological engineering from the University of Mines. He previously worked for Kennecott Copper Corporation in Hayden, Arizona from 1965 to 1970. He worked as a mine geologist, mill metallurgist, mine production and quality control engineer. Then he also worked for Kaiser Steel Corporation, Eagle Mountain Iron Ore Mine in California, 1970 to 1977. Worked as a process engineer and plant superintendent at that place. Then he was employed by Mountain States Research and Development, Tucson, Arizona, 1977 to 1980. Worked as a senior process engineer and operation superintendent. So without further ado, I'd like to introduce Tom Lien who will talk to us about in-pit coal crushing. MR. LIEN: Thank you. The official title of my paper is actually: "The Potential for In-pit Crushing and Conveying in the Powder River Basin." The Powder River Basin is one of the world's greatest coal fields and will be an important source of energy for centuries to come. About one-eighth of the total coal producing in the United States comes from the Powder River Basin, and 80% of that production came out of Campbell County, Wyoming last year. The growth potential for this region is projected to be enormous. New technology as well as existing technology will make this region competitive in the decades ahead. Understanding the current status of the Powder River Basin, both the mines and the possible methods for changing the means of material movements within the mines is the subject of this paper. Each mine is unique and must be addressed specifically with respect to the application of new and innovative technology. There have been many articles written in the recent mining journals on in-pit crushing and conveying applications, including costs which are very interesting, enlightening and I recommend it to any company considering such installations. To give a general setting, coal production in the United States for 1982 was about 800,000.000 tons. This production came principally from six regions, the Applachian fields of the eastern states where bituminous and anthracite coals have been mined for almost three centuries, the Midwest located in the upper Mississippi Valley are often typified by huge dragline operations of which AMAX Coal has three right now, the Gulf Coast lignites. feeding mine-mouth power plants, the vast bituminous and sub-bituminous departments of the four-comer states of Arizona, New Mexico, Colorado, and Utah and finally the Northern Great Plains lignite fields currently being developed and the sub-bituminous fields of Wyoming and Montana including the Powder River Basin. The Powder River Basin is located in northeastern Wyoming and southeastern Montana. It is the darker brown right in the center of the photograph. It covers about 18,000 square miles. It's about 200 miles north to south and 90 miles east to west. The shallowest coal beds are on the east, north and northwest edges of the basin with deeper coal beds toward the center in the same kind of relationship. There are about one trillion tons of coal in the Powder River Basin, that's the one with 12 zeros after it. A little bit there. It's distributed in many, many seams at varying depths to the current topography. In 1982 about 100,000,000 tons of coal were mined from this basin and 81,000,000 tons came out of Campbell County, Wyoming. The mines that are shown in this picture are basically the mines around the basin edge. The principal area that I'll be talking about is the eastern edge down where it shows Gillette and Campbell County. Geologically the Powder River Basin is the Fort Union formation. The most productive seam is called the Wyodak or Smith-Roland or the Anderson-Canyon, depending upon where you're located. There is about 75 billion tons of coal in the Wyodak of which about 23 billion are considered surface minable today. the coal is Paleocene in age, about 40,000,000 years old. It was once an old Delta region very much like the Mississippi River delta is today. During the 100,000 years that this deposit was formed peat accumulated to a thickness of about 365 feet. It was later buried and turned into sub-bituminous coal. All of the coal mined in the basin is for the electric utility industry. This coal has a typical BTU content of about 8,300 plus or minus about 4,500 BTUs. Sulfur coal is generally less than'/ %, thereby making this coal compliance coal in terms of sulfur dioxide emissions, 1.2 pounds of sulfur dioxide per million

Jan 1, 1983

Jan 1, 1975

Jan 1, 1951

By Bret K. Clayton

Jan 1, 2004

Jan 1, 1923

Jan 1, 1950

Jan 1, 1956

Jan 1, 1941

Jan 1, 1973

By John Pfisterer

Leadership Priorities in a New Business Environment ?Komatsu Equipment Company ?Health and Safety of Our Workforce ?The Green Economy & Market Challenges ?Equipment Trends ?Our Business Approach

Jan 1, 2009

By E. H. McCleary

The Alamo Mine The Alamo mine is located about seventeen miles northwest of Walsenburg, Colorado, on the Loma Branch of the Denver and Rio Grande Western railroad, in the foothills of the Black Mountains of Huerfano County. Prospecting Mr. W. B. Lewis of New York City, president of the Oakdale Coal Company and also president of the Alamo Coal Company first became interested in this property in 1920. After all natural features of the surface had been carefully examined by Mr. Lewis, he was convinced that the property was underlaid with coal seams. Plans for prospect drilling were made at once and this drilling was started late in 1921. In all, eight drill holes were put down to the Trinidad sandstone which underlies the coal measures in this field. These drill holes in general, showed very satisfactory results. Two workable coal seams were penetrated by most of these drill holes, the upper seam being six and one half feet thick and the lower seam having a thickness of ten and one-half feet. The two seams are separated by forty feet of sandstone and shale. Analyses of the seams proved each to be of a very high grade bituminous coal possessing hardness much above other bituminous coals, and having very bright lustrous appearance. Tests of more than a year's duration proved the coal to store excellently in closed bins and also in open bins where coal is exposed to elements. The drill hole data further showed the coal seams to pitch more than fifty per cent or about twenty-six and one-half degrees. The pitch direction being approximately South 65 degrees East. The drill holes further proved the coal seams did not outcrop at any point on the property, and no evidence of coal outcrop has been found in near vicinity. A splitting and pinching out of seams was found to occur some two hundred to three hundred feet of theoretical outcrop at very Western boundary of property. The most Easterly or No. 6 drill hole has a depth of eight hundred fifty feet to floor of lower coal seam. The Trinidad sandstone was found to be immediately under the lower coal seam, and the Pierre shales lying under this sandstone. Plans for Development and Sinking Having obtained sufficient data, plans for development of the property were carefully made sometime in advance of the actual opening of the mine. Every condition was carefully studied and the maximum production of clean and well prepared coal at as low a cost as possible during the entire life of mine was kept uppermost in the minds of all. The life of mine is estimated at approximately fifty years. It was decided to open up the lower and thicker seam first, and due to the pitch and other conditions a slope opening was decided upon for its extraction. The pitch of the coal having been found to be from fifty to sixty per cent or twenty-six to thirty degrees, the plan of driving the slope directly down the pitch of seam was eliminated and a plan that would give a more economical grade was decided upon. To obtain a lesser grade, a point several hundred feet west of-and at a less elevation than the theoretical outcrop of coal seam was selected for the slope opening. (Fig. 18.) To have driven directly down the pitch of coal seam would also have given the slope an uneven grade as the pitch of coal seam varied as it approached the crop. From this point of opening, the slope was to be driven on a thirty-one per cent, or' about seventeen degree pitch to intersect coal seam in No. 6 drill hole, a distance through the Pierre shales and Trinidad sandstone of two thousand five hundred fifty feet, the slope to be driven practically due East

Jan 1, 1925

PRESIDENT BOTTOMLEY: Gentlemen, the next order of business, if you wish to discuss it is Mechanical Loading. We still have a little time left that could be devoted to that subject, and the meeting will be open now for that purpose. Where is Mr. Edge- worth? J. E. EDGEWORTH (Foreman, Union Pacific Coal Company, Rock Springs, Wyoming): Here. PRESIDENT BOTTOMLEY: Yon start the ball rolling. Tell us what you are doing in the Rock Springs District, on the mechanical loading. SECRETARY SHURART Mr. Edgeworth is the man at the face handling the coal. He never sees the light of day these late winter mornings.

Jan 1, 1927