En los planos de ventilación y en los planos de las minas, debe estar indicada la ubicación de las barreras de polvo y/o agua. CAPITULO II. POLVO RESPIRABLE.
Decreto 1335 de 1987 →In force
Article 46
Decreto 1335 de 1987 · mediante el cual se expide el reglamento de seguridad de las labores subterráneas.
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