Tin mining began early in the Bronze Age, as bronze is a copper-tin alloy.in extraction and use can be dated to the beginnings of the Bronze Age around 3000 BCE, when it was observed that copper objects formed of polymetallic ores with different metal contents had different physical properties.
Quick Answer. Most semi-trailers weigh about 32,000 pounds when they are empty. Because the amount for a payload must be evenly distributed, the amount of cargo a trucker can haul is no more than 34,000 pounds if he is pulling tandem trailers. Continue Reading.
The ticket looks like this: Gross weight (with the truck and grain): 90,000 lbs Tare (weight of the empty truck): 23,000lbs Net weight (grain only): 67,000lbs So the net weight after all is said and done, is the amount of grain that we have to sell. Or the amount of cereal without the weight of a box, etc.