Complex sentence: These trucks are built by Terex, Caterpillar, Komatsu or Liebherr, and are mostly used in copper, gold, coal or oil sands pits in Arizona, Australia, Canada, or Chile.
Split into simpler sentences: These trucks are built by Terex, Caterpillar, Komatsu or Liebherr. Most are used in copper, gold, coal or oil sands pits in Arizona, Australia, Canada, or Chile.