Complex sentence: The church closed in the 1930s because of subsidence from nearby coalmining and was repaired and reopened in 1943, before closing again because of open cast mining in 1957.
Split into simpler sentences: The church closed for the first time in the 1930s because of subsidence from nearby coalmining. It was repaired and reopened in 1943, before closing again because of open cast mining in 1957.