但在煤炭资源开发过程中，尚存在着资源浪费，开发秩序混乱以及环境污染等严重问题。
However, there are serious issues, such as a waste of resource, disordered mining and environment pollution during development of coal resource.
但在煤炭资源开发过程中，尚存在着资源浪费，开发秩序混乱以及环境污染等严重问题。
However, there are serious issues, such as a waste of resource, disordered mining and environment pollution during development of coal resource.
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