采砂

采砂是指從露天矿坑[1]、沙坑、海滩、内陆沙丘、海床和河床中開採沙子[2]。沙子经常被用于制造业，例如用作磨料或混凝土。它還通常与盐混合灑在結冰和積雪的路面上，以降低路面的熔点温度[3]。

参考文献
  1. . Los Angeles Times. 15 July 1969: OC–A1 [2021-03-01]. （原始内容 (Subscription required)存档于2009-08-07）.; Lubasch, Arnold H. . The New York Times. 8 October 1967: R1 [2021-03-01]. （原始内容 (Subscription required)存档于2013-10-21）.
  2. . [21 February 2021]. （原始内容存档于2021-03-05）.
  3. . The Sydney Morning Herald. 2 November 2005 [2021-03-01]. （原始内容存档于2017-09-10）.
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