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.
I have a GMC 2500HD truck. A label in the glove box says the cargo weight rating is 1844 lbs. I also have a 8-1/2 ft camper on the truck, and the camper's wet weight is 2275 lbs. So I am 431 lbs over the rated cargo weight, yet I hear of other individuals hauling 10 and even 11 foot campers on their 3/4 ton pickups.