Environmental Strategies in the Mining Industry: One Company During mining metal-bearing rock called ore is extracted from underground or surface mines. Metal concentrations in ore vary greatly from less than 1 percent by weight for most gold deposits to over 60 percent for some iron ore deposits; most metallic mineral deposits have ore grades in the range of 1–5 percent by weight.
City of Tshwane: Draft Water Scarcity Report 1. The proposed project will assist the city in obtaining an in-depth understanding of the current status of water demand and supply of water and the importance of drafting ways to deal with the impending potential shortages. Strategic Objective 1: Provide sustainable services infrastructure and human settlement management
Assessing impacts of mining: Recent contributions from GIS The Gran Carajás iron ore project in southeast Pará Brazil. Image date: 01/06/2018 image taken from Google Earth Pro. The exposure of heavy metals in waste rock dumps and tailings dams presents an additional risk of soil contamination mainly when these metals become mobilised in water and are subsequently deposited in surrounding areas.