In the preparation and / or exploitation of a work is done inside the mine with a drilling machine to drill a section of 8 m wide by 8 m high;
Drawing labels, details, and other text information extracted from the CAD file (Translated from Spanish):
loading of boreholes, boreholes loaded with examon, bait, clay block, carmex, examon, standard for perforation mesh of a front, new, sheet, cia. mining construction, u.p. mine hope, area of responsibility, proc:, mine, mine, procedure, revised, involved sections nos, iii, executive committee, drawn :, dept. mine, approval:, superintendent, area manager, chief of security