Ebonyi also has several solid mineral resources, but little large-scale commercial mining.

Rich in mineral resources, the valley is home to large-scale mining and industrial activity.

However, estimates on overall longevity of the large-scale mining in the region vary due to mounting costs, international competition and environmental concerns.

Sunstone de-posits were always too scattered for profitable large-scale mining.

Advocacy for environmental protection and against large-scale mining are part of its core mission.

That process, to go on for 20 years, will make large-scale mining difficult and, he predicted, reduce Miss Reeb's bargaining power.

Companies say large-scale mining has become viable again in the "Golden State", California.

No large-scale mining of natural resources is allowed.

In January, Ecuador was shaken by mass protests against large-scale mining.

It drew large-scale mining and timber operations, which added to tribal receipts.