China is a country rich in tin resource. Its reserve makes up 27% of total reserve of wholeworld and ranks first among all countries. In 1949 the Chinese tin output was 4900 tonne. Up tonow it becomes 30000 tonne (198...China is a country rich in tin resource. Its reserve makes up 27% of total reserve of wholeworld and ranks first among all countries. In 1949 the Chinese tin output was 4900 tonne. Up tonow it becomes 30000 tonne (1988). In the past 4 decade accumulative total output of tin is 0.89million tonne, amone this 0.48 million tonne is for export.展开更多
A copper cannon belong to Western Hsia Dynasty(A.D.1032～1227)had been unearthed incity Wuwei in Province Gansu.This cannon is confirmed as an oldest metallic tubular firearm inthis world so far.In history Wuwei had b...A copper cannon belong to Western Hsia Dynasty(A.D.1032～1227)had been unearthed incity Wuwei in Province Gansu.This cannon is confirmed as an oldest metallic tubular firearm inthis world so far.In history Wuwei had been an area under Western Hsia government’s jurisdiction.展开更多
Ministry of Geology and Mineral Reserves resently declared that verified reserves of 12 min-eral species are the foremost in the world.These minerals are rare-earths、 gypsum、 titanium、 tantalum、 tungsten、 benton...Ministry of Geology and Mineral Reserves resently declared that verified reserves of 12 min-eral species are the foremost in the world.These minerals are rare-earths、 gypsum、 titanium、 tantalum、 tungsten、 bentonite、tin、 mirabilite、 barite、 magnesite、 antimony、 graphite.In addition,vanadium、molvbdenium and coal,etc.seven kind of mineral reserves take second place in the world.展开更多
文摘China is a country rich in tin resource. Its reserve makes up 27% of total reserve of wholeworld and ranks first among all countries. In 1949 the Chinese tin output was 4900 tonne. Up tonow it becomes 30000 tonne (1988). In the past 4 decade accumulative total output of tin is 0.89million tonne, amone this 0.48 million tonne is for export.
文摘A copper cannon belong to Western Hsia Dynasty(A.D.1032～1227)had been unearthed incity Wuwei in Province Gansu.This cannon is confirmed as an oldest metallic tubular firearm inthis world so far.In history Wuwei had been an area under Western Hsia government’s jurisdiction.
文摘Ministry of Geology and Mineral Reserves resently declared that verified reserves of 12 min-eral species are the foremost in the world.These minerals are rare-earths、 gypsum、 titanium、 tantalum、 tungsten、 bentonite、tin、 mirabilite、 barite、 magnesite、 antimony、 graphite.In addition,vanadium、molvbdenium and coal,etc.seven kind of mineral reserves take second place in the world.
