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By Richard Woodward

Presentation Outline ?What types of coal analyzers are there? ?What do they measure? ?How do they work? ?How accurate are they? ?Most common applications ?Sorting ?Blending ?Prep plant optimization ?Boiler Control

Jan 1, 2006

By Edward Bottomley

Mr. Chairman and Gentlemen: I tried to get Benedict Shubart to have some fellow-some big fellow with a big voice-to read this paper for me, but he said there was nothing doing; [ ] that I would have to read it myself. I will try and not take up too much of your time. It is a pretty big subject, Mechanical Loading, and it covers a good deal of ground. I have merely touched on the high spots, as it were. A great deal has been preached and written in the last year or so about mechanical loading, and I doubt if any other subject in the mining industry has been discussed so freely and as often in the last few years. It is not the intent of this paper to dwell on the merits or demerits of any [ ] particular type of loader, that is, to say what the writer thinks is the most efficient or most inefficient machine. There are several types of loaders on the market to-day that are proving very successful in many mining districts. Some of these, five or six years ago, seemed to be a miserable failure from every standpoint, mechanically

Jan 1, 1926

Jan 1, 1969

[Mr. Houston T. Aars Carter Mining Co PO8 3007 Gillette, WY 82716 Mr. Jay Abbott Union Supply Co 7458 S Jackson St Littleton. CO 80122 Mr. Ronald H. Achziger Midwest Rbr & Sply Co 6404 E 39th Ave Denver, CO 80207 Mr. Randy Acre Dorchester Coal Co 9350 E Arapahoe Rd Englewood, CO 80112]

Jan 1, 1983

By Robert E. Hanes

Coal Perspectives We are the ?Saudi Arabia of Coal Reserves? (Billions of Short Tons) [ ] However, China & India have added approximately one half of the U.S. installed base capacity for electrical generation, in TWO YEARS ? and it took us some 50-60 years to install our coal fleet.

Jan 1, 2008

By Gilbert Davis

MR. DAVIS: When the Secretary asked me to continue our accident experience in safety work at Dawson to cover the year just closed, I rather felt that he was asking 'a good deal, for we had said about everything that we could last year. I am not going to say very much, but in line with his request I have merely brought the figures up to date. I want to say, to start, that 1934 was, rather disappointing. It was the poorest year since 1930, as you will notice (indicates on diagram). This first column represents the accidents per thousand shifts worked. We cannot assign any real valid reason for the increase. We think we worked just as hard, but we are rather inclined to lay it onto the times; in other words, to lay it to the unrest and the changing conditions that are existent not only in this country but probably all over the world. We had twelve lost time accidents last year. As I explained last year, a lost time accident with us is an accident wherein the injured man is not able to return to his regular work, the next day-the day following the injury. So this represents (indicating) the lost time accidents per thousand shifts worked. We had one fatality in the twelve accidents which is reflected in the severity rates, which are also based upon thousand shifts worked instead of per million hours. The reason we are on the thousand shifts worked is be¬cause the Copper Branches of the Phelps-Dodge Corporation are all kept that way, and we are on the same basis for easy comparison.

Jan 1, 1935

CHAIRMAN I. N. BAYLESS: Will you come to order, gentlemen? They told me that you had a very interesting meeting yesterday and a good time last night. Our program is rather long this morning, and I am not going to take up any of your time, as we got started a little late. I will ask Mr. Marchant to make a few announcements. (Announcements.) SECRETARY MARCHANT: I just noticed in this morning's paper a rather serious accident at Hobbs, New Mexico, in which George Kaseman, a former President of the Institute, and a loyal member ever since its organization, was killed. I think that this meeting should go on record and prepare a resolution of condolence, etc., and with your per- mission we will have the Committee on Resolutions do that. I assume that will be all right. CHAIRMAN BAYLESS: Our first paper and discussion this morning will be Education of the Miner, by Thomas Allen, Chief Coal Mine Inspector of Colorado. Mr. Allen.

Jan 1, 1938

Jan 1, 1956

Jan 1, 1971

Jan 1, 1951

Jan 1, 1970

Jan 1, 1964

MR. D. HARRINGTON (U. S. Bureau of Mines) : I happen to be a member of the Safety Committee, and the men on the Committee, I believe are the ones who will find the most fault with the report; but I am absolutely not in accord with the last recommendation. (The use of the "Self-Rescuer.") I do not think it safe. I do not think you are always sure you are going to have a sufficient amount of oxygen; in fact I know there are occasions in mines when there is not enough oxygen to make a man safe in a gas mask or self rescuer. At one mine fire, workers using open oil and carbide lights experienced quick reversal of air which extinguished the lights and one of the workers having carbide light was overcome. It took about 45 minutes hard work with Sylvester method of artificial respiration to restore him to consciousness. Fortunately these men were working close to fresh air but had they been far from fresh air base and relying upon self-rescuers or gas masks they would undoubtedly have perished. I was at a mine fire in Wyoming. A bunch of men were working and the air turned on them, and if they hadn't oxygen breathing mine rescuing apparatus I think there would have been at least a half dozen men killed they would have been killed before you could say, "Jack Robinson." PRESIDENT PRYDE: I would like to ask if the self-rescuers are nut approved by the Bureau of Mines? MR. HARRINGTON: They are not; absolutely not.* Furthermore, the Bureau of Mines' Engineers have opportunities to go around in mines, and in mine cars as much as anybody else in the country, and I have in mind but one who is in the slightest degree in favor of allowing self-rescuers to go in a mine. MR. BEVAN: Mr. Chairman, I would like to ask the Safety Committee if it would be of any use to the fire boss traveling through the mine? PRESIDENT PRYDE: Mr. Chairman, I think we should finish up the discussion on the self-rescuer before we take up any other discussions.

Jan 1, 1924

Jan 1, 1952

By J. J. Craron

MR. J. J. CRARON: If Ross Weber rings that bell of his, I think I have a few secrets on him that I will tell. It is not such a long time ago when the sales and executive departments of the coal industry were constantly urging the operating department to increase their output, and this cry for increased production resulted in vast development work and increased capacity to the point where the operating departments are today in position to produce coal upon sudden demand far in excess of the ability of their sales departments to dispose of it. So today our ability to produce coal is away ahead of our ability to market it. There are many reasons, of course, for this condition. First, the present economic situation, which has prevented even a normal consumption of coal. Secondly, the over-development and production of every commodity and industry as the result of war time and post-war time prosperity. Thirdly, the inroads made by competitive fields, particularly oil and gas, because of the desire of the public for automatic heat.

Jan 1, 1934

By Wm. Monay

MR. MONAY (Vice President Kinney Coal Co., Scofield, Utah): The past year and a half has witnessed a series of coal mine disasters in Utah and Wyoming, concentrated into the short space of a few months, following a long period of years in which the industry was comparatively free from devastating calamities. The natural result has been a hysterical activity on the part of bureaus, commissions and professional reformers who know little about coal mining from a practical standpoint. This activity has been met by the industry in Utah with an attitude of submission, no doubt the result of the fear of being misunderstood by the public. But it is my firm conviction that the lives and property of the coal industry will find their surest guaranty of protection in the humanity, and in the self interest of those operating and working in the mines, rather than in governmental regulation. Inelastic, inflexible blanket statutes and rules will simply stifle and hamper the initiative and progress of our industry in working out its own salvation, under the varying and changing conditions of different localities, different conditions, and in different mines. We who have spent our lives in digging in the mines and operating them, know more about this business than anyone else and I believe it is time for us to speak up and no longer sit meekly by while inexperienced bureaus and unskilled commissions make up laws, rules and regulations for us which when made are on the books to stay, even though in a short time they may prove inapplicable, in whole or in part, or be superseded by something different, and which in some cases create new dangers or lull us into a false sense of security. Shortly after the Castle Gate explosion in March, 1924, a new set of safety rules was issued by the Indus- trial Commission of the State of Utah to become effective July 1st of the same year, the most important of which prohibits the use of black powder in any mine--gaseous or non-gaseous; prohibits the use of open flame lamps in any mine-gaseous or non-gaseous; and requires that rock dusting in all main haulage ways as far as the freezing point and required that all mining machines be equipped with water to be applied while cutting. These rules have been characterized as "Utah's Monument to her Dead Miners" in a large poster spread broadcast over the country from an office in New York that styles itself the Association for Labor Legislation. In reviewing the coal mining history of the State of Utah, in the year 1900, a serious disaster occurred at Winter Quarters. The cause of the same is believed to be an explosion of powder that was stored in the mine, which was a common practice in the early days, and from that time until the Castle Gate disaster, March 8, 1924, a period of some twenty-four years, no explosion of any kind occurred in this district. During all this period open lamps were used, considerable black powder was used, rock dusting was unheard of, sprinkling with water was very generally done-all without any catastrophe. Since the adoption of the new rules, we have 'had a very violent explosion at the Carbon Fuel mine in Spring Canyon. At the time of this explosion, 3,000 feet of the main slope had been rock dusted several times between July 1st and September 21st. The second left entry, which is a main haulage way, a distance of 3,000 feet was completely rock dusted on the date of the explosion. This mine is not considered extremely gaseous, yet an explosion as violent as that of the Castle Gate mine occurred. Some thirty men who had been loading coal in various parts of the mine on this Sun- day, the day of the explosion, and other men employed in rock dusting the second left entry, had just left the mine a little while before it occurred, and no abnormal condition in the mine was noted. At the time of the explosion five machine men were in the mine.

Jan 1, 1925

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

Jan 1, 1938

Jan 1, 1961

By N. H. Wetzel

Railroads, attempting to increase their tonnage without adding new lines, have for some time realized there is a definite relationship between increasd haulage efficiency, and constant communication with each moving unit that operates along their roadbeds. Elaborate radio communication equipment has been devised for this purpose, and is rapidly being installed. Coal mines are faced with similar haulage problems and have sought this constant contact through the use of telephone systems, and dispatcher stations. Often the fixed mine telephone system is unsatisfactory, since the desired person is not present at the phone when needed. Dispatchers lose contact with a motorman as soon as he is out of sight, until he calls in from another telephone. The recently developed frequency-modelated radio phone which makes use of the trolleywire network in a mine as a carrying medium, permits instant and continuous contact between dispatcher and locomotives. The motorman can immediately contact another motor or the dispatcher regardless, of his motor's position on the trollywire system, whether moving or standing.

Jan 1, 1948