Based on an example from Datong Coalmines Group, the paper analyses possibility and usage of heavy plow under the conditions of thin seam coal face with Two Hard Roofs and gives out some proposals.

介绍了新型刨煤机的主要性能和结构特点以及使用条件，结合晋城矿区煤层赋存条件，论证了刨煤机在晋城矿区使用能大幅度地提高综采工作面煤炭块率。

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Perhaps most famously, heavy snowfall in New England led to the controversial 1982 Snow Plow Game, in which Patriots kicker John Smith hit a game-winning field goal only after a snowplow had cleared a spot for him to kick from.

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