Thematic Process , Sustainability Focus Group
Rooms 19, 20, 21
Mining is a very important economic activity that generates inputs for basically the entire production chain.
Mining methods have always evolved in search of greater efficiency and reduction of costs and risks in mineral exploitation. In spite of this, the activity generally involves large works such as tunnels, open pit excavations, tailings dams, among others, which represent a relevant environmental risk often materialized by the contamination of water resources.
Recently, the Hydrofracking – a new technology for natural gas extraction has been developed. This process makes mining in dense shale economically feasible, where before it was not.
Hydrofracking, differently from conventional gas drilling, uses significantly more water, as well as a mixture of water, sand and chemicals that is pumped into the shale to fracture the rock and release the gas.
The use of chemicals creates an increased potential for toxicity with long-term impacts that sum themselves with the environmental impacts of the drilling, especially groundwater and surface water contamination.
In this session, examples of impacts of mining on water resources will be presented and discussed with a focus on finding solutions to the problems caused by using nature-based solutions.
• Cássio Roberto da Silva
Administrative Counselor of Geological Survey of Brazil-CPRM
• Alice Silva de Castilho
Coordinator of Hydrology Department – Geological Survey of Brazil - CPRM
• Paula Andreia Dagostino Vilela
Project Manager at Ramboll
• Marília Carvalho de Melo
Director of Water Management Institute of Minas Gerais - IGAM
• Sílvia Cristina Alves França
Senior Technologist at Mining Technology Center - CETEM