Complex sentence: The cabs were fully enclosed, equipped with a comfort and an ergonomics hitherto unknown with the SNCF; driving and firing controls were within reach while seated, automatic coal feeding thanks to the mechanical stoker, and oil-firing was even easier.
Split into simpler sentences: The cabs were fully enclosed, equipped with a comfort and an ergonomic hitherto unknown to SNCF crews. Driving and firing controls were within reach while seated, with automatic coal feeding thanks to the mechanical stoker, and oil-firing was even easier.