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 Cenozoic Era is the third and current era in the Phanerozoic Eon, and is one of three, the two other eras being the Paleozoic and Mesozoic. Cenozoic is derived from Greek â¦and means new life.. The Cenozoic began about 65 million years ago in the wake of the Cretaceous-Paleogene extinction event, and continues to the present. It is now subdivided into three geologic periods rather than two: the Paleogene, Neogene, and Quaternary. The Tertiary period is no longer used by geologists.