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edwin drake
One is called an oil drill.
They are completely different engines; however, the most fundamental difference is that the Watt steam engine runs on steam, whereas the internal combustion engine runs on fuel oil.
Because oil is in the crust, scientists never drilled to the mantle so far because it is too deep for them.
It has to be pumped. A drill is used to drill down to the oil and then a pump is setup to get the oil out.