ROMA 1080
Width : 1080mm
Efficient width : 940mm
Thickness : 2.0mm, 2.3mm, 2.5mm, 2.8mm, 3.0mm
Length : customized(times of unit length 328mm)
Purlin distance : 984mm
Aplication : villa, residential roof, etc.
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The history of diamond mining in Venezuela dates back to the beginning of the last century and has been in existence for a hundred years. By the early 1990s, the record diamond production had once culminated, with an annual output of 580,000 carats. In this century, the diamond production of the Commission has been declining year by year. In recent years, the decline has been even greater. In 2008 and 2009, the output was reduced to 9,381 carats and 7,730 carats respectively.
At present, the diamond production is mainly concentrated in the Guanyamo area. The government has issued 75 franchise rights to the region, including Lacy Bata, Toco, Salvador, San Antonio and Las Alicias. The 65 mineral rights have expired, and the four tenements of Natal I and II, Guaima and Centra have not yet been put into operation, and only six mineral rights in Guanyala are in operation.
The main reason for the decline in diamond production was that the four dams of the Raul Leoni hydropower station were located in the main diamond producing area of ​​Bolivar. For strategic reasons, the government banned development and mining in the region. In addition, like gold mines, the diamonds in this area are privately exploited illegally and smuggled. This part of the output is not included in the official statistics of the diamond production.
According to reports, the diamond mining is divided into open-pit mining and underground mining, both open and underground mining are very backward, basically in the original state. Its industry lacks the necessary equipment and infrastructure, and has a great impact on the local ecological environment. Mining is carried out in an unorganized, uncontrolled and disordered state with almost no formal mining, selection, smelting and processing.
The government plans to adopt a series of measures to organize small and medium-sized diamond producers to legally exploit the legitimate areas through cooperation. The government and large-scale production enterprises jointly develop and exploit together to restore production in the affected areas and build necessary infrastructure. Improve diamond production, quality and grades to meet international Kimberley diamond certification standards and regulations. At the same time, the relevant departments and the military have plans to reduce and prohibit the illegal exploitation and smuggling of diamonds, and incorporate the diamond industry into the national economic development plan for development.
Venezuela: Analysis of the specific situation of diamond mines
Venezuela is one of the few diamond-producing countries in Latin America. Its resources are around 41 million carats, with an estimated reserve of 21.71 million carats and a geological reserve of about 6.96 million carats. It is mainly distributed in Bolivar in the Guayana Plateau. The three regions of the state's Guanyamo, La Paragua and Santa Elena de Uyron are mostly sand mines. In particular, the Guanyamo region began producing diamonds from alluvial gravel layers in the late 1960s. In 1982, geological personnel discovered a kimberlite group in the Cordero area, consisting of more than 20 rock-bed rock masses with an area of ​​about 100 square kilometers. The kimberlite is rich in diamonds, and the Rb-Sr method of fresh rock has a dating result of 710 million years (the weathered sample has been measured for 1.7 billion years). The eclogite-type mineral combination in diamonds has an absolute advantage. According to the professionals of the Ministry of Basic Industry and Minerals, the diamond grade produced by the Commission is not high, industrial diamonds account for 60%, and jewelry diamonds account for 40%.