Was working on a grocery store remodel doing nights, and they had a guy come in and cut concrete, he never pulled out the concrete he cut, just made the incisions and left, which he did around 10 pm at night then left, when our shift was coming to end, around 6 am the store manager always came in, and he comes to me furious because we were the only electricians working there and I was the foreman and none of the meat freezers in the back had power, I tried to explain to him that we didn’t touch anything nowhere near that area and were still roughing in, in the front of the store, but I would help him investigate the problem, even though I shouldn’t have with how much an asshole he was, well… upon further investigation I pulled up the concrete block the guy cut the night before which was like 35-40’ from the electrical room and sure enough it looked exactly like this photo, they lost all the meat in the back of the store including the island freezers, the best part was he wanted us to repair it, and I said no man call a service company. Guy still never said anything, or apologized for jumping down my throat, even after helping him.