Complex sentence: By October 17,1951, there had been two deaths: one due to premature dynamite detonation in the Beard Lot tunnel, and another due to crushing of a power-shovel operator.
Split into simpler sentences: By October 17,1951, there had been 2 deaths. One due to premature dynamite detonation in the Beard Lot tunnel, and another due to crushing of a power-shovel operator.