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1·Suide Soil and Water Conservation Experimental Station of YRCC conducted tests and study on probing and using the construction method of feldspathic sandstone as dam building material in 1997.

为探索利用砒砂岩作为筑坝材料的施工方法，黄河水利委员会绥德水土保持科学试验站于1997年进行了试验研究。

2·The soil hydro-physical properties of artificial seabuckthorn woodland had been studied in arsenic sandstone areas.

本文研究了砒砂岩地区沙棘人工林地土壤水分物理性质及其变化规律。

3·Effect of employing different fertilizer in the upland yellow soil and the sandstone yellow soil on tea garden edaphon and soil fertility and tea yield was studied.

在山地黄壤和砂岩黄壤中施用不同肥料种类，了解对茶园土壤中微生物种群和土壤肥力及茶叶产量的影响。

4·Storing coal, coal gangue, coal cinder, coal ash, sandstone, lime soil or other materials in densely inhabited areas without taking any measures for fire and dust prevention.

采取防燃、尘措施，在人口集中地区存放煤炭、矸石、煤渣、灰、石、灰土等物料的。