Playing the current Playtest build.
I Had salvaged multiple salavge sites and the labourers failed to collect the resources left behind by the salavge.
They were sat there for approximately 2 years before dissapearing into nothing among the items were.
Heavy tools x2, Gold x 426, Swords x 20, Clothes x 12, Hide coats x 40, all of which great additions on an early settlement.