What is mine dust?
Mine dust is emitted from open-pit mines, ore processing and metal extraction plants, ore stockpiles, ore transport containers and mine waste deposits. It contains fine mineral particles that can cause lung disease and other respiratory problems, like asthma, when they are inhaled.
What is McIntyre powder?
Devised in 1943 by mining executives as a preventive measure against the lung disease silicosis, McIntyre Powder was a finely ground aluminum dust blown into the mine dry (change room) before every shift. Managers had the power to terminate employment for those who refused to inhale it.
Where is the Powder River Basin located?
More than 40% of coal produced in the United States comes from 16 mines in the Powder River Basin (PRB), a mining region primarily located in northeast Wyoming and southeast Montana.
What is mined near Gillette Wyoming?
The Eagle Butte mine is a coal mine located 7 miles (11 km) north of Gillette, Wyoming in the United States in the coal-rich Powder River Basin. The mine is an open pit, “truck and shovel”, mine producing a low-sulfur, sub-bituminous coal from the Roland and Smith seams that is used for domestic energy generation.
What are the causes of dust in mines?
Coal dust is a fine powdered form of which is created by the crushing, grinding, or pulverizing of coal. Because of the brittle nature of coal, coal dust can be created during mining, transportation, or by mechanically handling coal.
How is dust controlled at mine sites?
Engineering controls Suppress dust by using water sprays on stockpiles and roads, and when using machinery and cutting equipment. Use additive in water sprays to suppress dust and adjust the droplet size of the spray according to dust particle size. Rehabilitate exposed mine land to reduce environmental dust load.
Why is Powder River Basin coal so cheap?
The uncommonly thick and shallow coal seams in Wyoming’s Powder River Basin are among the cheapest in the world to mine. That cost-to-mine advantage, Godby said, only plays out at scale — operators have to make big investments in capacity and produce large volumes of coal to make it pay.
What happened to Powder River Basin coal?
A Powder River Basin coal mine has closed down for the first time in modern history. At the end of January, mining ceased at the Decker coal mine in Montana after the owner of the mine filed for bankruptcy late last year.
Who owns coal mines in Wyoming?
Thunder Basin Coal Co. LLC, 107.3 million short tons. Cloud Peak Energy, 58.0 million short tons. Alpha Coal West, Inc., 38.0 million short tons (company acquired by Contura Energy in 2016)
What is the biggest coal mine in Wyoming?
Peabody Energy North Antelope Rochelle Complex
Coal is mined in the PRB at a rate of 12 tons per second, filling between 50 to 70 coal trains per day. Seven of the nation’s 10 largest coal mines operate in the Wyoming part of the PRB. The largest coal mine is the Peabody Energy North Antelope Rochelle Complex, which produced more than 66 million tons in 2020.
How do you stop dust from mining?
Suppress dust by using water sprays on stockpiles and roads, and when using machinery and cutting equipment. Use additive in water sprays to suppress dust and adjust the droplet size of the spray according to dust particle size. Use enclosures (e.g. covered conveyors, enclosed cabs on vehicles, plant and equipment).
How do you control dust in a mine site?
This chapter describes the three major control methods used to reduce airborne dust in tunnels and underground mines: ventilation, water, and dust collectors. It also describes methods to reduce the generation of dust, so less has to be removed from the mine air.
Are there any coal mines in Powder River basin?
CASPER, WY. (AP) – A Wyoming coal mine says it will shut down, making it the second mine in the Powder River Basin to announce this year that it’s closing.
What can you do with concrete powder in Minecraft?
A block of concrete powder can be used for decoration itself, or it can be changed into concrete of the same color, when it comes into contact with water (but not rain or splash water bottles ); however, if it lands on a single block of water that is not flowing anywhere, the concrete powder will not solidify.
What can you do with Blaze powder in Minecraft?
When brewed into an awkward potion, it creates a Potion of Strength, and a mundane potion with a Water bottle. Blaze powder can also be combined with an Ender Pearl to make an Eye of Ender which is used to detect and activate a Stronghold ‘s End Portal.
What was the value of the McIntyre Powder Project?
The McIntyre Powder Project is a registry for miners who have health issues and who have been exposed to McIntyre Powder aluminum dust. Between 1912 and 1955 production was valued at $230 million and the company paid $62 million in dividends to shareholders.