Explosion safety distance Blasting hazards: blasting-induced earthquakes, air shock waves, scattered rocks, toxic gases. Blasting must determine the scope of blasting hazards and the safety distance, and set up warning and safety protection measures.   ① Safety distance for blasting flying stones Blasting type The minimum safe distance for individual flying ...

Open-pit Mine Safety Rectification Start with stratified mining From top to bottom, layer-by-layer mining is a fundamental principle in open-pit mining. Relevant regulations clearly define the stage height for open-pit mines under different rock types and different operation methods. However, there are still many small and medium-sized mines currently using extremely primitive, non-layered, hi...

Accident Handling Tips for Poisoning and Suffocation (1) Before entering the dangerous area, rescue personnel must wear protective equipment such as gas masks and self-rescuers, and check their air tightness to prevent rescue personnel from suffering from poisoning or suffocation accidents, which could lead to even greater casualties. (2) Move the poisoned person to a well-ventilated and fre...

MT11A Product Acceptance and Launch Conference       On June 26, 2018, the MT11A new type tunnel anchor rod trolley, jointly developed by China Railway Tunnel Bureau Group and Zhejiang Zhigao Machinery Co., Ltd., was officially accepted and the product launch ceremony was held in Quzhou, Zhejiang Province. The celebration ceremony was held in the drilling machine asse...

What are the steps for promoting the construction of green mines in Hunan Province? By the end of December 2017, by the end of June 2018, and by the end of September 2018, the provincial, municipal and county-level green mine construction work plans should be completed respectively. 2. Establish standards for green mine construction: The project was initiated by the end of December 2017 an...

On May 31st, JD.com announced the official launch of its construction materials business. In the future, various merchants and individual consumers will be able to purchase a wide range of construction materials such as sand, gravel, cement, pipes, fittings, and coatings on the JD platform. Drawbacks of the construction materials industry: Long-term rough-style operation, with a lengthy ...

  In recent years, there has been intense competition in the sand mining auction activities, resulting in the situation where the transaction prices are artificially inflated. This has placed a huge burden on sand mining supervision. Moreover, illegal sand mining has a wide distribution area and is repeatedly prohibited but still persists. As a result, the sand and stone industry has expe...

1.Overview of Water Medium Energy Conversion Blasting Technology Water medium energy exchange blasting is an analysis of the blasting mechanism from the perspectives of thermodynamics and chemistry. If a "certain amount" of water is added to an "explosive thermodynamic system", according to the laws of thermodynamics and the law of conservation of mass, the "energy" ...

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April 11-13, 2018 Huazhicheng Haosheng Hotel, Kunming, Yunnan, China Booth: A27 Display machine: New mining trolley UP45 Product features: Various underground construction equipment used to be imported in China, which were expensive and had extremely high maintenance costs. The latest UP45 mining equipment developed by Zhigao Machinery is an efficient and profession...

    On June 7th, the 9th International Infrastructure Investment and Construction Summit Forum was grandly opened in Macau. The Chief Executive of the Macao Special Administrative Region, Cui Shi'an, the Deputy Minister of Commerce of China, Gao Yan, the Director of the Liaison Office of the Central People's Government in the Macao Special Administrative Region, Zheng Xiaosong, t...

Today, on Baidu, the world's largest Chinese search engine, enter "; Green Mines” Within 0.008 seconds, 12.7 million related entries, including 113000 images, can pop up. If we were to go back 10 years, this number would have been unimaginable. " In 2012, we held a green mining experience exchange meeting in Manzhouli, Inner Mongolia. At that time, the venue could only accommo...

On June 4th, 2015, the annual conference; International Infrastructure Investment and Construction Summit Forum; Opened grandly in Macau as scheduled. This grand event attracted 44 vice ministerial level and above guests from 31 countries and regions, including Vice President Fayas of Costa Rica and Deputy Prime Minister Davis of the Bahamas. Over 1000 representatives from more than 500 internatio...

New Actions in Central Environmental Protection Supervision Work! Are all sand and gravel enterprises ready?

Recently, the Hunan Provincial Department of Land and Resources issued the "Key Points for Mineral Development and Management in 2018", emphasizing the comprehensive completion of the clearance and withdrawal of mining rights in natural reserves, strict on-site verification of the scope of mining rights applications, and rejection of those that do not comply with relevant industrial policies and planning, safety and environmental conditions, to ensure the timely completion of the rectification task of feedback issues from central environmental protection inspectors by the end of June this year.