Authors
Rafael Barrionuevo Giménez
Member of AENOR Security Committee Advisor of Peru Mining Chamber, Mining Engineer Responsible of Environmental Area of Vigo School of Mine C.P. 36.310 Vigo., Pontevedra, Spain
© 2018 Rafael Barrionuevo Giménez, published by STE Group sp. z.o.o.
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.