With the knowledge of bill of materials (Table 3) and labor hours (Table 4), the total cost for. manufacturing the steel vessel is calculated and summarized in Table 5. Given that the steel vessel. has a storage capacity of 564 kg of CGH2, its cost is $539 per kg of stored hydrogen.
Prehistoric (Archaeological) & Historic Periods. The Prehistoric Period consists of time periods in the origin and evolution of humankind from about 2.5 million years to about 900 BCE. the Prehistoric Period is divided into the Archaeological Periods of the Stone, Bronze and Iron Ages.
The Jurassic period took place before the Cretaceous era and after the Triassic era. It started around 199 million years ago and ended about 44 millions years later.(145 million years ago if you can't do the maths).he Jurassic period took place before the Cretaceous era and after the Triassic era. It started around 199 million years ago and ended about 44 millions years later.