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.
Mini 90 lbs. TW Series-Fits the Following Trucks Truck Size Bed Size Height* Door Clearance** Weight*** Full & Mid Long Bed 31 45 200 lbs. Full & Mid Short Bed 31 45 190 lbs. Mini Long Bed 28.5 39 160 lbs. Mini Short Bed 28.5 39 150 lbs. CH Series-Fits the Following Trucks Truck Size Bed Size Height* Door Clearance** Weight*** Full & Mid Long Bed 23 36 175 lbs. Full & Mid Short Bed 23 36 175 lbs.