In Opening sequence after Sam is shot and horse runs away carrying his body Sam's foot is hanging loose from the stirrup. Before Sam falls from the horse the foot is seen plainly in the stirrup.
This movie has many plot holes, including that the Apache suddenly maraud the miners and all the subsequent gold seekers, even though the mine had supposedly been worked without incident for six months.
It's difficult to believable that Jake (Kevin Hagen) would place dynamite at the exact spot that the gold was stashed in a desert of hundreds of square miles, after departing with Lisa Lu (Ming Kwai), who had only a vague idea where to find it.
It's difficult to believe that the Apache are that afraid of dynamite as Jake (Kevin Hagen) says in town, considering he had to explode several sticks at the end of the move to finally rid the area of them.