Almost all gold mines experience start up problems before declaring commercial production, mill throughput production hurdle, tailings, leach pad number of problems can occur before mines are fully commission and can almost always be on as a buying opportunity, plant capacity utilization rates are defined at 30, 60, 90 consecutive days of production of design capacity when grades and recoveries have consistently been near planned levels then you have a producing mine that will make you a nice profit, most investors expect some kind of issues when playing resource stocks