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.
03-25-2008, 05:38 PM. say an F-150 which is a half-ton truck. Strictly speaking is that 1,000 pounds in the bed, or 1,000 lbs - driver's weight ( and any passengers as well) ? I'd say certainly 3,000 lbs of bricks is too much, but what does half ton mean in real terms ? Is it technically illegal to load a half ton truck with 1,500 lbs ? I'm not talking trailers, just bed load.