Hometown Powder - Optical Multiplexer - China Pdh Multiplexer

In the "Great Qing dynasties, Sichuan Historical Record" and other parts of Shi

, the Chinese have about the re-refining of gunpowder Laojunshan records: From Laojunshan saltpeter saltpeter mined hole in the ground made into powder, the business area of responsibility right from the northern Sichuan defense and transported to the front. In addition to the mass-produced NOx Laojunshan area, the sulfur content of ores rich in pyrite can be seen everywhere; re-Laojunshan Top China still save a Taoist - Laojun Temple; Laojunshan on the dense vegetation, they can land for firewood charcoal. It can be said with emphasis on China to manufacture gunpowder Laojunshan area should be many conditions.

Has been proved, Laojunshan region has Zhaoyang Dong, Tai Hing hole, rain-dong, senior officials holes, rhino-dong, Fairy Cave, the moon-hole, dry hole and the horns were holes, holes and other ancient saltpeter Laojun holes are more than 10 sites. "Lian-NOx" hole size is most critical to Daxing and Chaoyang Dong. Tai Hing Tung (commonly known as "smoke air-raid shelter"), 1736 meters above sea level, was 34 degrees downward-sloping, the hole length 1.5 km, width 60 meters, 50 meters in height, distributed in 10 cave saltpeter refining operations platform; 1900 meters above sea level position of the sun Worse still, the size of holes, winding 7.5 kilometers of the cave, the refining saltpeter platform on a total of million square meters.

By nitrate-hole inspection, experts found that a number of orderly arranged nitrate pool, an area of very large work table, you can infer that the exploitation of the scale of a great! Cave scraps, waste, and Yuan, Ming and Qing era pottery, porcelain mountain. The experts agreed that, after the invention of gunpowder on the historical records of the multi-region field trips, Jiangyou Laojunshan Chung Wa region is the largest town with gunpowder-related artifacts-rich region. The archaeological experts to examine the relationship between stratigraphic layers analysis, Chaoyang Dong at least through the three large-scale mining, the earliest time possible before the Ming Dynasty, the last large-scale mining in the period of the Qing Dynasty. Findings of the study indicates that this is China's largest ever found in a powder raw material production site!

In re China town, the, according to local historical records, the Ming and Qing Dynasties who has came from Guangdong, Fujian, Shaanxi, Jiangxi and other places of the arms dealers for the acquisition of, trafficking in explosives and set up eight of the General Assembly Hall. The emergence of these Hall group, from an emphasis on Chinese side confirmed that the powder was an important national distribution center. Only because of age-old, most of the provinces have already decadent Hall is currently the only remaining South Temple, Longevity Palace, Yu palace. The establishment of provincial hall, the influx of mainlanders and long-term residence to the provinces into a heavy Chinese culture. SAIC concluded that after careful examination, Jiangyou Laojunshan area is the largest so far found in China's ancient ruins nitrate refining, in the history of the development of gunpowder has important significance to the study of Ming and Qing period, mining and metallurgy mining technology has great a high value. Approving the registration of "Chinese hometown of gunpowder." This is the protection and development of science and the ancient site of nitrate-dong, to create gunpowder, culture, and all have far-reaching implications. SAIC successfully registered "Hometown of Chinese gunpowder"

by: gaga

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