About Us

Henan LIMING Heavy Industry Science and Technology Co. LTD which mainly manufacture large and medium-sized crushing and grinding equipments was founded in 1987. It is a modern joint-stock corporation with research, manufacturing and sales together. The Headquarter is located in HI-TECH Industry Development Zone of Zhengzhou and covers 80000 m ². Another workshop in Shangjie Industry Park covers 67000 m ². Over the more than 30 years, our company adheres to modern scientific management system, precision manufacturing, pioneering and innovation. Now LIMING has become the leader in domestic and oversea machinery manufacturing industry.

120

million

cubic meters

Industrial chain production base

70

national patents

689sets

national patents

170

Equipment service country

Company Culture

core values of the company

Create Value

Share Value

Observe Order

Respect Value

Service philosophy

Religious, fine, tight, and harmonious

LIMING spirit

Standardization, value, serialization, and differentiation will always exceed our contract

Brand Concept

Create and promote civilization, refine and interpret brilliantly

Business philosophy

Religious, meticulous, rigorous, and harmonious work

Our Global Footprint

Case Scene

Coal mining in the United States - Wikipedia

As of 2013, 41 percent of US coal production was mined from federal land, almost all of it in the western US, where federal coal makes up about 80 percent of mined production. The federal coal program is overseen by the Bureau of Land Management (BLM) under the US Department of Interior. Federal coal lands are leased by competitive sealed bids, for the highest bonus (initial payment) offered. In addition, the government receives an annual rental of $3 per acre, and a fixed percentage royalty of the market v

AP 42 11.9 Western Surface Coal Mining - EPA

11.9 Western Surface Coal Mining 11.9.1 General 1 There are 12 major coal fields in the western states (excluding the Pacific Coast and Alaskan fields), as shown in Figure 11.9-1. Together, they account for more than 64 percent of the surface minable coal reserves in the United States. 2 The 12 coal fields have varying characteristics that may influence

Where our coal comes from - U.S. Energy Information ...

26/05/2020  In 2019, about 706 million short tons of coal were produced in 23 U.S. states. Surface mines were the source of 62% of total U.S. coal production and accounted for 65% of the total number of mines. About 0.5 million tons, or less than 0.1% of total coal production, was refuse recovery coal.

List of coal mines in the United States - Wikipedia

45 行  Foundation Coal: Surface Wyoming 17,264,483 Cordero Rojo Mine: Cloud Peak Energy :

AP 42 11.9 Western Surface Coal Mining - EPA

11.9 Western Surface Coal Mining 11.9.1 General 1 There are 12 major coal fields in the western states (excluding the Pacific Coast and Alaskan fields), as shown in Figure 11.9-1. Together, they account for more than 64 percent of the surface minable coal reserves in the United States. 2 The 12 coal fields have varying characteristics that may influence fugitive dust emission rates from mining ...

Memoranda of Understanding: Surface Coal Mining

The phrase "surface coal mining operations resulting in the placement of excess spoil fills in the waters of the United States” is intended to apply generally to any mountaintop mines which are returned to their approximate original contour (AOC)[SMCRA Section 515]; mountaintop removal mining [see definitions and performance standards at 30CFR785.14(b) and 824]; contour mining operations ...

Coal and the environment - U.S. Energy Information ...

01/12/2020  Surface mines (sometimes called strip mines) were the source of about 62% of the coal mined in the United States in 2019. These mining operations remove the soil and rock above coal deposits, or seams. The largest surface mines in the United States are in Wyoming's Powder River Basin, where coal deposits are close to the surface and are up to 70 feet thick. Mountaintop removal

OSMRE Regulating Coal Mines - Office of Surface Mining ...

OSMRE directly regulates surface coal mining and reclamation activities on non-Federal, non-Indian lands within a State if the State does not adopt its own program pursuant to section 503 of SMCRA. OSMRE currently operates Federal programs in 12 States: Arizona, California, Georgia, Idaho, Massachusetts, Michigan, North Carolina, Oregon, Rhode Island, South Dakota, Tennessee, and

GAO-10-21 Surface Coal Mining: Characteristics of Mining ...

United States Senate . Surface mining for coal in the mountainous areas of Appalachia—often referred to as mountaintop mining—generates controversy due to the scale of mining operations and concern about the post-mining appearance of reclaimed lands, among other issues. Mountaintop mining operations can involve thousands of acres and take a decade or more to complete. During this time,

Mapping the yearly extent of surface coal mining in ...

25/07/2018  Surface mining for coal has taken place in the Central Appalachian region of the United States for well over a century, with a notable increase since the 1970s. Researchers have quantified the ecosystem and health impacts stemming from mining, relying in part on a geospatial dataset defining surface mining's extent at a decadal interval. This dataset, however, does not deliver the temporal ...

Surface Mining Reclamation - rrc.state.tx.us

19/04/2021  Texas is the largest consumer of coal in the United States and in 2015 was the seventh largest coal-producing state.In 1975, the Texas Legislature gave the Railroad Commission jurisdiction to regulate surface mining for coal and uranium. Companies mining coal/lignite in Texas must have a Commission permit and post a bond for each site they operate in the state. The goal of the coal mining ...

What are the largest remaining coal mines in the US?

19/03/2019  The surface mining technique is used to mine the sedimentary coal deposit at the site, which has a coal quality is claimed to average 8,800 BTU/lb. In 2017, the direct and indirect economic benefits from the mine stood at $2.8bn (£2.1bn) and, as of last year, it employed 1,210 people.

Hydrologic Effects of Surface Coal Mining in Appalachia

15/06/2015  Surface coal mining operations alter landscapes of the Appalachian Mountains, United States, by replacing bedrock with mine spoil, altering topography, removing native vegetation, and constructing mine soils with hydrologic properties that differ from those of native soils. Research has demonstrated hydrologic effects of mining and reclamation on Appalachian landscapes include

Mining Law 2021 Laws and Regulations USA ICLG

09/10/2020  National Recreation Areas are generally closed to mineral locations and leasing surface coal mining operations are prohibited in these areas. States have the authority to lease, sell, exchange, or otherwise manage state-owned mineral lands pursuant to constitutional or statutory provisions, and as regulated by state boards or officers, through either a single agency or a combination of ...

Memoranda of Understanding: Surface Coal Mining

The phrase "surface coal mining operations resulting in the placement of excess spoil fills in the waters of the United States” is intended to apply generally to any mountaintop mines which are returned to their approximate original contour (AOC)[SMCRA Section 515]; mountaintop removal mining [see definitions and performance standards at 30CFR785.14(b) and 824]; contour mining operations ...

OSMRE Regulating Coal Mines - Office of Surface Mining ...

OSMRE directly regulates surface coal mining and reclamation activities on non-Federal, non-Indian lands within a State if the State does not adopt its own program pursuant to section 503 of SMCRA. OSMRE currently operates Federal programs in 12 States: Arizona, California, Georgia, Idaho, Massachusetts, Michigan, North Carolina, Oregon, Rhode Island, South Dakota, Tennessee, and

GAO-10-21 Surface Coal Mining: Characteristics of Mining ...

United States Senate . Surface mining for coal in the mountainous areas of Appalachia—often referred to as mountaintop mining—generates controversy due to the scale of mining operations and concern about the post-mining appearance of reclaimed lands, among other issues. Mountaintop mining operations can involve thousands of acres and take a decade or more to complete. During this time,

Basic Information about Surface Coal Mining in

06/10/2016  Surface coal mining in the steep terrain of the central Appalachian coalfields includes: mountaintop removal, contour, area, highwall, and; auger mining. Operations are concentrated in: eastern Kentucky, southern West Virginia, western Virginia, eastern Ohio, and; scattered areas of eastern Tennessee. Surface coal mining involves:

GAO-10-206 Surface Coal Mining: Financial Assurances for ...

United States Senate . Surface mining for coal in the mountainous areas of Appalachia—a process often referred to as mountaintop mining—has generated opposition in recent years because of its impact on landscapes, streams, ecosystems, and communities. In mountaintop mining, before the underlying coal can be extracted, the land is cleared of forests and other vegetation. Explosives or other ...

U.S. Coal Mining - Statistics Facts Statista

17/06/2021  Sources of coal production in the United States The coalbed thickness of just over half of coal produced in the U.S. was over 120 inches (300cm), and much of this can be reached with surface mining.

10 Largest Coal Mining Companies In The United States

18/02/2021  Coal mining in the United States has a long history. In fact, it goes back to the 1300s with Native Americans from the Hopi tribe using coal. Commercial coal use didn’t come into use until 1701, but that’s still a pretty impressive history. It was during the 1880s that coal overtook wood as the largest source of energy and remained the dominant power source in the United States through the ...

Hydrologic Effects of Surface Coal Mining in Appalachia

15/06/2015  Surface coal mining operations alter landscapes of the Appalachian Mountains, United States, by replacing bedrock with mine spoil, altering topography, removing native vegetation, and constructing mine soils with hydrologic properties that differ from those of native soils. Research has demonstrated hydrologic effects of mining and reclamation on Appalachian landscapes include

What EPA is Doing to Reduce the Adverse Impacts of

Since 1994, EPA's Coalbed Methane Outreach Program (CMOP) has worked cooperatively with the coal mining industry in the United States – and other major coal-producing countries – to reduce emissions of methane from coal mining. By helping to identify and implement methods to recover and use methane instead of emitting it to the atmosphere, CMOP has played a key role in the United States ...

Coal Mining 101 – The Coal Seam

06/05/2013  Coal mining in the United States is also heavily regulated by mature environmental regulatory programs, including a specific federal statute directed specifically at coal mining. West Virginia is the nation’s second largest coal producing state. Coal mining operations in West Virginia produced over 135 million tons of coal last year, down from a recent high of 165 million tons in 2008.