When fishing the string fish in sand producer, string milling length should be optimized and a downhole string dynamic analysis model is established to calculate the length.

出砂井落鱼管柱打捞需要对管柱的套铣长度进行选择，针对这一问题建立了井下管柱受力分析计算模型。

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Color concrete brick is a novel decorative brick, which is made by dealed efflorescent sand and ground. stone with color HEC consolation (C-HEC) and special producer equipment.

彩色混凝土路面砖是利用彩色HEC固化剂(C - HEC)和专用生产设备处理风化砂、碎石屑制作新型装饰路面砖。

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To make ends meet Van Nieuwenhuyse, now 50, had to turn NovaGold into a sand-and-gravel producer in western Alaska.

FORBES: Magazine Article

He had a striking story, having survived the plunge in metal prices in 2001 by turning NovaGold into a sand-and-gravel producer in western Alaska.

FORBES: Mining The Hedge Funds

The company is the second largest producer of commercial silica, which is a sand-like substance used in fracking as well as glass making and chemical manufacturing.

FORBES: Frackers Drilling for IPO Dollars