Continuity mistake: The scene with the fake address was shot on two different days. The sky is cloudy and it appears to be raining or snowing earlier in the sequence. By the end, it's sunny.
Continuity mistake: When Jimmy gets to Chuck's burned house and sees the coroner truck with his brother's corpse getting away after the beginning of the episode, a fireman is going to pass behind him, but when Jimmy turns to see again the burned house, the fireman has suddenly disappeared when it turns into a long shot. (00:13:32)
Answer: The bulldozer could be disassembled, the individual pieces carried down, and then reassembled once underground.
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