as No. 1658 of 2013 Law (Rep blica de Colombia 2013) are not enforced in the country. According to the Sinopsis Nacional de la Miner a Aur fera Artesanal y de Peque a EscalaColombia (MADS 2012) the improper mercury use in gold amalgamation in the ASGM has generated a download of this metal to the environment in the. Obtener precio