The specific classification criteria for each health or. physical hazard class identified in the HCS enables manufacturers, importers, and others. performing hazard classification to collect and evaluate the available data to determine if the. chemical is hazardous and identify the associated level of severity.
Ancient Transportation. The first form of transport was, of course, Shanks pony (the human foot!). However people eventually learned to use animals for transport. Donkeys and horses were probably domesticated between 4,000 and 3,000 BC (obviously the exact date is not known).ncient Transportation. The first form of transport was, of course, Shanks pony (the human foot!). However people eventually learned to use animals for transport. Donkeys and horses were probably domesticated between 4,000 and 3,000 BC (obviously the exact date is not known).
Sorry but the first pulley was not invented by the Egyptians it was invented by Archimedes of Syracuse in around 250 BCE.