Coal mining Wikipedia

2021-4-13  Coal mining is the process of extracting coal from the ground. Coal is valued for its energy content and since the 1880s has been widely used to generate electricity. Steel and cement industries use coal as a fuel for extraction of iron from iron ore and for cement production. In the United Kingdom and South Africa, a coal mine and its structures are a colliery, a coal mine is called a 'pit

Sand mining Wikipedia

2021-4-2  Sand mining is the extraction of sand, mainly through an open pit (or sand pit) but sometimes mined from beaches and inland dunes or dredged from ocean and river beds. Sand is often used in manufacturing, for example as an abrasive or in concrete.It is also used on icy and snowy roads usually mixed with salt, to lower the melting point temperature, on the road surface.

ᐉ Spare and Wear Parts for Mining and Construction

Element Group is a versatile, service based company. We produce spare and wear parts under our own brand Element®. We manufacture parts for crushing, screening and pumping equipment, in addition to conveyor components, wear-resistant materials and mill linings.

China vows crackdown on sand mining on Yangtze

2021-3-15  China has launched a crackdown on illegal sand mining operations on the Yangtze river, which have made large parts of central China more vulnerable to drought. Excessive sand mining on the Yangtze, which provides water for a third of the Chinese population, is believed to be responsible for the abnormally low levels of water during the winter drought season in recent years.

China GDP From Construction 1992-2021 Data

GDP From Construction in China decreased to 12017 CNY HML in the first quarter of 2021 from 72995.70 CNY HML in the fourth quarter of 2020. GDP From Construction in China averaged 13187.89 CNY HML from 1992 until 2021, reaching an all time high of 72995.70 CNY HML in the fourth quarter of 2020 and a record low of 181.90 CNY HML in the first quarter of 1992.

Komatsu aims for lead in hydrogen-powered mining

TOKYO -- Komatsu, Japan's top construction equipment maker, plans to develop hydrogen power as an alternative to diesel for heavy-duty mining dump trucks, in a first for the industry, Nikkei has

China vows crackdown on sand mining on Yangtze

2021-3-15  Sand mining is believed to have lowered the bed of the Poyang Lake a Yangtze river flood outlet and one of the world's largest sources of sand used in construction by at least 20 metres (60 feet). Large parts of the lake now dry up in the winter season.

Serbia halts China-owned mine over environmental

2021-4-14  Serbia has ordered China's Zijin Mining Group (601899.SS) to halt work at a shaft at the country's only copper mine and to complete a waste water treatment plant after it failed to comply with

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More Than 18 Years of Manufacturing Experience. HMR, specialized in researching and manufacturing PDC cutters since 2002, with 35000㎡ wholely-owned industrial park and 2500㎡ researching center, is a government authorized national high-tech enterprise and ISO9001 certified enterprise.

The influence of COVID-19 on agricultural economy

2020-10-23  Understanding the influence of COVID-19 on China's agricultural economy and the Chinese government's emergency measures to ease the economic impacts of viral spread can offer urgently-needed lessons while this virus continues to spread across the globe. Thus, this study collected over 750,000 words upon the topic of COVID-19 and agriculture from the largest two media channels in China