Earthjustice, a nonprofit environmental law firm, is suing to block the lease of state-owned land in Otter Creek, Mont., to Arch Coal for mining to serve demand in Asia and elsewhere.

地球公正，一个非盈利的环保律师事务所，正在请求阻止租赁蒙大拿奥特·克里克的国有土地和劝阻阿奇煤炭公司开采煤矿用于满足亚洲和其它地区的需求。

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Simulation testing and theoretical analysis were made to study generating mechanics and moving evolutionary process of "granular arch" structure of upper immediate roof in top coal caving.

通过相似模拟实验和理论分析，研究了综放条件下上位直接顶“散体拱”结构的形成机理和移动演化过程。

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Revamp on boiler arch can distribute wind well to improve efficiency, decrease the selection of coal kind and get good economical result.

对原锅炉炉拱改造，使炉内布风合理，提高锅炉效率，降低燃煤煤种的选择性，得到良好的经济效益。

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Arch Coal Inc had an annual average earnings growth of 10.4% over the past 10 years.

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Google, Apple, Amazon, Baidu, IBM, Hewlett-Packard, Deere, Peabody Energy, Arch Coal, Natural Resource Partners, and Freeport McMoRan.

FORBES: Magazine Article