Complex sentence: The closest was the the Roachburn pit, at coalfell wher three men lost their lives in 1908, the subsequent accident report documents a very wet pit with fractured seams butting up to a slab of clay-and this was typical of most pits in the area.
Split into simpler sentences: The closest was the the Roachburn pit, at Coalfell where three men lost their lives in 1908. The subsequent accident report documents a very wet pit with fractured seams butting up to a slab of clay-and this was typical of most pits in the area.