Complex sentence: Delivered by tank car at four unloading points on a special railroad siding, and by gasoline trucks at four additional points, the gasoline was stored in four underground pre-stressed reinforced concrete tanks that were lined with Thiokol.
Split into simpler sentences: Delivered by tank car at four unloading points on a special railroad siding, and by gasoline trucks at four additional points. The gasoline was stored in four underground pre-stressed reinforced concrete tanks the were lined with Thiokol.