A method for processing waste containing lead and other toxic heavy metals. During the manufacture of a building material, lead and other toxic heavy metal wastes are added and incorporated to form an economical, safe, non-hazardous building product.

MWM is a portal to web sites with information concerning management of mineral, mine and metal waste. This site offers many links to other web sites, which inform about a.o. European legislation, mining industry, environmental mining disasters, acid mine drainage, tailing ponds, heavy metal pollution, and waste management. Still it is under contraction. Post-consumer waste is the waste produced by the end-user (the garbage one puts outside in the trash can). This is the waste people usually think of. But though the most visible, this is very small compare to the waste created in the process of mining and production.

The ecological rucksack of industrial production is the total amount of waste related to a good in the course of its life cycle. For some metals, such as gold, the rucksack can be of a volume of 500 000 times the volume of metal extracted. For each gram of gold produced, 500 kg of mining waste is produced, containing other heavy metals which may pollute the atmosphere in their powdered form. These manufacturing wastes are by far the greatest output of many industrial production systems. In the United States, 93% of natural resources extracted are never transformed in goods, 80% of goods sold are thrown away after only one use, 99% of resources in a good are "waste" within 6 weeks of sale. There are very large potential gains in eco-efficiency, increasing the ratio of production unit per unit of natural resource, and decreasing the ratio of waste generated as a by-product. But mining waste is often perceived as waste only in case of an ecological crisis or as undesirable emissions.

Industry is slowly moving toward better use of its wastes. Industrial ecology for example is a method which consists of using the waste of a factory (matter or heat) as resources for another factory. (See the industrial district of Kalundborg in Sweden). Most wastes issues are due to products rejected outside of the manufacturing process, or those for which industries do not feel responsible: disposable packaging, free goods for advertisement. Shifting from service leasing rather than goods selling might be a solution.

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