Both these models have been weathered using different techniques to gain desired effect.
The MLE is also an Austrains model. The wagon has been airbrushed at the start then had Rustall applied in different spots. Finally the deck was weathered using the powder dust substance that comes in the Rustall package and finally the deck was flat coated.
The load is a Pipe load purchased from a local hobby shop. Sorry I can't recall the brand. However, it was a product from a U.S. based manufacturer.