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周三大队位于辽宁省灯塔县张台子公社,过去社员烧柴严重短缺,一年烧柴只能用三个月,其余全靠花钱买煤烧,社员负担很重。秸杆不能还田,粮食产量下降。然而该县地处无烟煤矿区,煤矸石堆积如山,过去没有开发应用。一九八二年该大队在县农村能源办的帮助下,开始改灶改炕试烧煤
On Wednesday, the brigade was located in Zhangtai Sub-commune, Dengta County, Liaoning Province. In the past, there was a serious shortage of firewood for its members. Only three months of firewood can be used in a year. The rest was entirely burdened with expenses for buying coal. The straw can not be returned to the field, the grain output drops. However, the county is located in an anthracite mining area with huge accumulation of coal gangue, which has not been developed and applied in the past. In 1982, with the help of the County Rural Energy Office, the brigade started to change the stove to test the burning of coal