Intro: The Department of Lands, Forests and Water Resources, through the office of the Deputy Minister of Water Resources, requested that B.C. Research undertake a literature investigation into the ability and feasibility of discharging mine-mill wastes by various methods and techniques into fresh and salt water. The aim of the investigation is to indicate those situations where the disposal methods and conditions may be considered satisfactory and unsatisfactory. In cases where a reasonable doubt as to the unacceptable effect on environment is considered to exist, an attempt should be made to define the critical factors or circumstances.
Summary: The literature with regard to the effect of mining and milling wastes on the environment was surveyed in detail back to 1950. This survey covered the methods of disposal of stripping waste and tailings, the solubility and toxicity of various components of these wastes, as well as the physical damage done by solid components of the waste. The study also touched on the reclamation and reuse of mining wastes after active mining ceased.
Recommendations are made as to the most acceptable procedures for waste disposal from an environmental point of view. No attempt has been made to assess these recommendations from an economic standpoint.
B.C. Research. 1970. The Disposal of Mining and Miling Wastes with Particular Reference to Underwater Disposal