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Crushing Plant

Crushing Plant

The combination crusher is a new generation high efficiency crushing machine designed and researched by integrating the domestic and foreign crusher technology with the same kinds and optimizing the main technical parameters.
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see how sand mining threatens a way of life in southeast asia

Be and her son escaped unharmed, but the coffee shop and her nearby house were destroyed. “It took all of what we owned to build the house, and now it's all gone,” she sighs. Still, Be counts herself lucky. “If it had happened at night, I and my grandsons would have died. We used to sleep in that house,” she says

The main causes of the collapse can be seen floating in many places on the Tien’s murky waters: dredging boats, using rackety pumps to raise from the river bed enormous quantities of sand. In recent years, that humble substance has become an astonishingly hot commodity. Sand is a key ingredient in concrete, the essential building material of Vietnam’s fast-growing cities. Demand for it is surging—and that is wreaking havoc not only on Vietnam’s rivers, but also on the all-important Mekong Delta. (Read about the damming of the Mekong in the magazine.)

In towns and villages all along the Mekong River and many other rivers around the country, banks undermined by dredging are collapsing into the water, taking with them farm fields, fish ponds, shops, and homes. In recent years, thousands of acres of rice farms have been lost, and at least 1,200 families have had to be relocated. Hundreds more have evacuated in-stream islands that were literally disappearing beneath their feet. Government officials estimate some 500,000 people in the Mekong Delta area alone need to be moved out of such landslide zones

see how sand mining threatens a way of life in southeast asia

River sand mining isn’t only a problem for people: It also muddies waters and scours riverbeds, killing the fish, plants, and other organisms that live there. “When I was a child, we'd catch fish and snails to eat,” recalls Ha Thi Be. “Since the sand dredges came, the fish and snails are no more.”

Vietnam is far from the only place where sand mining is inflicting such damage. All over the developing world, cities are growing at a furious pace, devouring sand in unprecedented quantities. The number of Vietnamese living in cities has doubled in the last twenty years, to some 32 million. Worldwide, the urban population is rising by about 65 million people annually; that’s the equivalent of adding eight New York Cities to the planet every single year. Nearly 50 billion tons of sand and gravel is extracted annually to create all the concrete office towers, apartment blocks, highways, and airports those people need. (Some Vietnamese sand is also sold to nearby Singapore, which uses gargantuan amounts to build artificial land.)

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