New directions in tailings management

摘要

Two Million Tonnes a Day -A Mining Waste Primer issued by MiningWatch Canada in December 2009 sets out conceivable ills associated with current and possible new tailings disposal methods. In this paper, we set out to examine current and proposed methods of tailings disposal and management. While there have been failures of tailings impoundments, it is possible to design, operate, and close these facilities safely, and in ways that protect the environment. This paper will establish that the issues raised in MiningWatch and similar documents posted on other web sites that attack mining and tailings disposal practices are founded on a lack of technical knowledge; failure to collect, collate, and understand the facts; and a desire to make statements derived from pre-established prejudices and perspectives. This paper summarizes the body of knowledge, new technologies, and practical experience, along with case histories that substantiate the fact that tailings disposal can be managed in compliance with international guidelines and standards; local regulations and requirements; in an environmentally responsible manner; and in a manner that provides employment.