VANCOUVER, BRITISH COLUMBIA — (Marketwire) — 11/20/12 — Oro Mining Ltd. ("Oro Mining" or the "Company") announced today that it has received Mexican federal government approval of its Environmental Impact Statement (MIA), and has commenced pre-construction activities on its 100% owned La Trinidad project. Construction is planned to have a duration of ten months with gold production shortly thereafter. Also, the Board of Directors have approved a name change of the Compan
