“六五”期间,湖北省黄冈地区积极革新墙体材料,利用当地丰富的砂源和石灰石生产灰砂砖,部分取代了毁田的粘土砖。全地区9个县,巳有5个县建成了国营灰砂砖厂。一些乡镇在国营企业的影响下,也积极筹建灰砂砖厂,已有2个乡办厂建成投产,另有4个乡镇厂正在兴建。五年间,生产灰砂砖1.4亿块,利用淤塞河床的砂子44万吨。 During the “6th Five-Year Plan” period, the Huanggang area in Hubei Province actively reformed the wall materials, used the local rich sand source and limestone to produce lime sand bricks, and partially replaced the destructed clay bricks. In 9 counties across the region, there are 5 counties where a state-owned lime sand brick factory has been built. Some towns and villages are also actively building sand-lime brick factories under the influence of state-owned enterprises. Two township-owned factories have been completed and put into production, and four township and township factories are under construction. In the five years, 140 million gray sand bricks were produced, and 440,000 tons of sand were used to block the river beds.