Digging a hole in the factory

I was in  a warehouse of factory and there was a large machine that was pounding a hole in the ground.  The machine was very big and had men walking around on it.  There were decks around the machine with steel railings.  The center of the machine was a piston with a point.  The piston went up and down to create a large hole.  I watched as the machine slowly went into the ground as it drilled a hole.  The men on the deck slowly disappeared.  The men who were operating the machine decided to take a lunch break.  Me and another person started walking around on the machine.  I noticed that the machine vibrated when we walked around on it.  I told my friend the machine was a little shaky.  He started running back and forth on the machine and making it rock.  Eventually he made the machine tip over and it crashed through a small office in the center of the factory.  I escaped by diving under a steel stairway.  The machine was not injured but it was laying in all the wreckage .  The supervisor came back and started getting very angry.  His face got red and he fired my friend.  I was so glad that he got fired because he had done things like that in the past and gotten away with it.