Continuity mistake: When Elmer is digging a hole to put a stick of dynamite in to try and find gold, the circle of the hole has earth around it. When he runs for cover after putting the dynamite in the hole, the earth is completely scattered, and when he puts the dynamite back in the hole before zipping it up, the earth is back around the circle.
Continuity mistake: After Elmer has dug a hole in the ground, he takes a stick of dynamite from the box and puts it in the hole to try and find gold. When he runs for cover, the box has disappeared.
Continuity mistake: When Elmer is holding onto his pick after Bugs dives into the hole, Bugs comes up and cuts his suspenders, revealing his girdle. When Elmer pulls up his suspenders, the pick has disappeared.