The minerals industry uses large volumes of water in many of its operations. Because of the rapidly decreasing availability of water in many areas and the need to control pollution, efficient and economical processes for purifying mineral waste waters are urgently needed. As part of a continuing program to devise technology for abating pollution caused … Read more
The technology of acid mine drainage (AMD) treatment has improved since the mid-sixties, and water pollution from active coal mining operations has been reduced considerably. Present treatment processes are designed to raise the pH of the effluent to within the range of 6.0 to 9.0 and reduce the total iron concentrations to less than 7 … Read more
In 1979, as part of its minerals environmental technology research, the Bureau of Mines began a study of mine waste tailings disposal. Part of the investigation focused on evaluating the effectiveness of the sand bed dewatering technique on alumina miniplant tailings. Alumina wastes result from the hydrochloric acid extraction of alumina from nonbauxitic ores. These … Read more
The Federal Coal Mine Health and Safety Act of 1969 specified that the average respirable dust level to which a miner is exposed during the work shift must be 2.0 mg/m³ or less as of January 1, 1973. In response, the Bureau of Mines initiated a program to develop new and improved methods of technology … Read more
Identifying a water source is the first step in water filtration, understanding the source allows us to break it into categories. Here are the main five water sources: Municipal Ground water (well) Surface water Lake River Stream (creek) Shallow well Rainwater Seawater Municipal supply: This can be confusing for some, the city of Los Angeles … Read more
Why Mining needs Water & How is Water Used Water plays an important role in most mining and extractive processes. Understanding the main uses of water, the quantity and quality of water that arc required for each use, and the water losses associated with each use are the first steps in making decisions on how … Read more
The Water Diaries STORY 1: BIGASS COMPANY IS IN COMPLIANCE, BUT THE FISH ARE DEAD Background BAM (BigAss Mine) completed construction in the early 00’s and started mining and processing. BAM is located somewhere south or east of the border. Maybe South America, maybe Siberia, definitely not Australia, good blokes there, eh. The BigAss Mine … Read more
Here is the importance of understanding your water report, this applies to well water, lake water and of course city water quality report. You don’t need a science degree to understand the principles of a water report, start by narrowing it down to the main objective. Today we’ll focus on how to read a well … Read more
Background: As we learned in Part 1, Bigass Mining (BAM) Company had just finished construction and had started mining and milling operations. The BAM tailings management facility (TMF) was designed as a non-discharge facility but was discharging. The TMF had odor, foam issues at the discharge point and the receiving water stream that happened to … Read more
World Bank Background Makeup The World Bank is composed of the International Bank for Reconstruction and Development (IBRD) and the International Development Association (IDA). The World Bank Group (WBG) incorporates the International Finance Corporation (IFC), the Multilateral Investment Guarantee Agency (MIGA), and the International Centre for Settlement of Investment Disputes (ICSID) with the two banks. … Read more