Twilight of the Age of Steam, Part 2: Petroleum and After
In the mid-nineteenth century, a new industry emerged, based on the refining of petroleum. The human use of petroleum is ancient, and may (for all we know) date well into pre-history. In the form found most often in nature, as thick pools of bituminous tar, this sticky, potentially flammable substance found use as a caulk,…
Source: technicshistory.com
