Sonora remedial project: Phytostabilization
Introduction
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Mine tailings at Nacozari represent a high risk of collapse |
Research by The University of Arizona and the Universidad de Sonora determined that the tailings represent not only a high risk of collapse (landslide) due to the high slope and deep cracks of the tailings but also the dust dispersed by wind represents an environmental health problem. It is therefore urgently necessary to resolve this problem that poses a risk to the safety and health of the Nacozari residents. The necessary measures to address this problem are contemplated in the “Mine Tailings Stabilization Project in Nacozari”.
The tailings are highly eroded by wind, water, transit of vehicles and other activities that generate dust. This dust is taken up into the atmosphere by wind and dispersed, settled and accumulates in the homes of people in the town of Nacozaride Garcia where people can breath the dust. It is therefore the people that live and perform activities (work and/or recreate) around the mine tailings that are the most susceptible to develop respiratory issues caused by dust inhalation and also the most exposed to a possible collapse of the tailings.
What are the solutions?
To minimize the risk of a landslide or collapse of the mine tailings it is necessary to stabilize the site by reshaping/moving the tailings so that the tailings end up with a more stable and safe slope. For now, it is necessary that people stop playing and exploring the caves in the tailings. Channelizing rain water can also help prevent landslides.
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Greenhouse studies are being conducted at the University of Arizona to determine which plants will grow best in the tailings at Nacozari |
To reduce the amount of dust, it is necessary to prevent the traffic of bicycles, motorcycles, and automobiles in the tailings and also to stop any digging or other activities that generate dust. In addition, growing trees in the surrounding areas cna reduce dust.
Contacts:
Dr. Raina Maier The University of Arizona Principal Investigator - U.S. |
Dr. Diana Meza Figueroa University of Sonora Principal Investigator - Mexico |
Dr. Sergio Alan Moreno Zazueta University of Sonora Site Preparation Coordinator |
Margarita de la O, M.S. University of Sonora Field Manager |
