Complex sentence: With less than an hour of the shift remaining, a huge explosion ripped through the workings, the force of the blast blowing the cage up No.1 shaft into the headgear and breaking the coupling.
Split into simpler sentences: With less than an hour of the shift remaining, a huge explosion ripped through the workings. The force of the blast blowing the cage up No.1 shaft into the headgear and breaking the coupling.