Two environmental groups and a pecan-farming company filed an appeal with state regulators asking them to revoke the air pollution permit issued Jan. 2 for the proposed Copper World mine south of Tucson. The Center for Biological Diversity, Save the Scenic Santa Ritas and Farmers Investment Co. filed a notice of appeal and request for hearing on Thursday. They argue that the state’s permit fails to require advanced controls and engineering to contain mine wastes, which they say exposes neighbors near the site in the Santa Rita Mountains to the threat of dust bearing arsenic, cadmium and lead. They…..