Imagine a strip-mined pit that literally looks like the dark side of the moon--a black moonscape reeking like a tarry toxic soup.
To reduce tailings footprint, next-generation containment strategies include waste disposal in mined-out pits or in thickening vessels.
Coal is mined and stone is quarried.
Six days later, the British steamer Alhama was mined while loaded with pit props destined for Dunkirk.
Reclaiming wetlands following open pit mining for industrial oil sand extraction is challenging due to the physical and chemical conditions of the post-mined landscape.
The migrant birds that make it unscathed past Laotie Mountain are mostly bound, of course, for southeast Asia: a region well on its way to being clear-cut and strip-mined into one vast muddy pit, since China itself is hopelessly short on natural resources to supply the factories that supply us.
This paper presents a new mathematical formulation integrating to life-of-mine planning and the maximization of net present value, with the related waste and tailings disposal kept within the mined-out parts of a pit, using a stochastic integer program that manages geological uncertainty including metal grades, material types and related chemical compositions.
New industry came from iron ore, discovered in the north, mined relatively easily from open pits, and shipped to Great Lakes steel mills from the ports at Duluth and Two Harbors.
Brian Schweitzer did not discuss the environmental impacts of turning half of the beautiful state of Montana into an open-pit coal mine and then converting the mined coal into atmospheric carbon dioxide.
The purpose of this paper is to better prepare stakeholders, including future modelers, mine managers, consultants, permitting agencies, land management agencies, regulators, research scientists, academics, and other interested parties, for the challenges of predicting and managing future pit lakes in un-mined areas.
Xuanwei County is well known for its high incidence of lung cancer, attributed mainly to the wide use of smoky coal mined locally and the use of unvented fire-pit stoves (Mumford et al. 1987).
