The Boat in the distance when Westin as Wellington and Falcone first officially meet changes from closer to distant between shots.
Immediately after Mike jumps through the warehouse window Harlan effortlessly picks up and throws a 55-Gallon drum of oil behind him. The drum would weigh ~450 pounds and it's very unlikely Harlan could pick up and toss it so easily.
When Michael attacks Harlan from behind with a concrete chunk, a camera man can be seen moving into the frame on the lower right side.