Dart Tractors pulling triple trailers in California was a big deal years ago. I don't think Dart or Payhauler trucks are around anymore since Dart was sold to Unit-Rig Company, which is part of TEREX CORPORATION. TEREX also acquired Payhauler trucks. I think RIMPULL is still at work and has rebuilt many DART trucks.

Great and informative video I've never seen a bulldozer on top of a big pile of salt.. Thanks for your video..

Sodium chloride (NaCl), a simple chemical compound, also known as table salt, has been a food item that has been of great importance to humans for centuries. The biggest feature that increases the importance of salt comes from the use of salt as a preservative to preserve nutrients for a long time in prehistoric times. In ancient times, foods such as meat and fish were dried and stored in salt to prevent their deterioration. Salt is a source of food for all living things, including humans, and is a commercially important substance. Table salt, which can be found all over the world, has been an important need and trade item throughout history.[1]

Apart from being a nutrient, salt; It is widely used in leather, animal husbandry, water softening systems and chemical industry.