LAS VEGAS, NV — (Marketwire) — 09/26/12 — Researched by Industrial Info Resources (Sugar Land, Texas) — Leaders of four major mining firms were generally optimistic in regards to the long-term growth prospects for the at yesterday-s opening session at the MINExpo 2012, which is being held this week in Las Vegas, Nevada. Companies such as (NYSE:BHP) (Melbourne, Australia) and (NYSE:BTU) (St. Louis, Missouri) have cutback spending and production due to waning demand. Industrial Info is tra
