Mine water damage prevention and response
(1) Water seepage symptoms 1. Water vapor phenomenon of surrounding rock: The rock ( coal ) layer be ...
Cat : 202111
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The development of bolt drilling rigs has gone through more than 30 years, and now ...
Purification of rare earth metals by molten salt extraction
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Certain rare earth metal mixed molten salt in contact with a high temperature, changing the metal O ...
Mining work of the mining method in the staged rock drilling stage
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After the cutting work is completed, the free surface can be blown according to the cutting vertica ...
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Fluorite minerals, like other minerals, generally use both open and pit mining methods. The shallow ...
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The cutting work with the sub-column sublevel caving method is mainly based on the bottoming of the ...
Application of Cloud Storage Technology in Security Monitoring System
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The application of big data in the security industry makes security more intelligent. Big data tec ...
ZF, UBS and IBM jointly launch the first car payment transaction platform
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ZF (ZF), UBS (UBS) and IBM will jointly release the payment transaction platform is based on ...
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Flotation column is a kind of high-efficiency flotation equipment . Compared with trough flotation m ...
Researchers to prepare large-area high-efficiency perovskite solar cells
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Xinhua News Agency, Shanghai, September 14 (Reporter Chou Yi) The reporter learned from Shanghai J ...
Po Chun 310 automatic transmission will be on the market, more than 50,000 yuan can easily have!
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On September 22, Baojun 310 automatic transmission will be listed at the Qingdao Auto Show. It is ...
Mine underground blasting safety regulations
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    (1) General provisions     1. When underground blasting may ca ...