Tongguan is the third largest gold-producing county in the country, known as the "Gold City of China." It is also a resource-based city that heavily relies on the development of the gold industry. Since the 1970s, it has delivered a total of 4.5 million taels of refined gold and paid nearly 2.5 billion yuan in taxes and fees. After decades of intensive development, entering this century, Tongguan County's gold resources have increasingly depleted, industrial benefits have rapidly declined, and fiscal revenue has significantly shrunk.

The full hydraulic open-pit rock drilling rig is one of the most commonly used drilling machines in domestic construction departments. It is mainly used in open-pit mines, the cement and building materials industry, the stone market, construction, and road engineering quarry construction. Currently, most of the machines used domestically are crawler-type with a single-arm drilling mechanism, primarily used for drilling downward blast holes. The diameter of the blast holes typically ranges from 64 to 102 mm, with a maximum drilling diameter of up to 127 mm, and the drilling depth is mostly within the range of 15 to 20 meters. It uses D38 mm, D45 mm, and D51 mm diameter round coupling drill rods or MF drill rods, as well as ball tooth drill bits with diameters ranging from 64 to 112 mm.

There are two methods for rock drilling and excavation: the drilling and blasting method and the mechanical rock breaking method. In domestic construction, the drilling and blasting method is primarily used, with operational areas concentrated in tunnel and culvert construction within infrastructure projects, as well as in shaft excavation for underground mining production.

The field investigation work of the comprehensive natural resources survey project in the coastal zone of Zhanjiang, Guangdong, undertaken by the Yantai Coastal Geological Survey Center of the China Geological Survey, is in full swing.

Rick Laming Technology wishes our great motherland eternal prosperity and flourishing, and may good luck and health accompany you throughout your life!

According to the news from the Chinese Embassy in Peru on September 24, on September 22, Ambassador Liang Yu met with Peruvian Minister of Energy and Mines Merino at the official residence. Both sides had an in-depth exchange of views on strengthening bilateral cooperation in energy and mining, as well as other topics of mutual concern. Commercial Counselor Zhao Chunjiang and others were present.

In our country's mining resources, underground mining resources account for a large proportion. The extraction of underground mining resources must be based on the production conditions of the mine, using different drilling and blasting mining techniques. Generally, underground mining can be divided into three forms based on the depth of the drilled blast holes: shallow hole drilling (hole depth 6m), medium-deep hole drilling (hole depth 10 to 30m), and deep hole drilling (hole depth 50 to 60m).

On September 5th, news of a military coup came from Guinea, where the 83-year-old president was detained by the army, and a video was recorded showing him sitting on a sofa in a confused state.