normally a pig is thrusted by using pressure differential.
look at the size of the pig, look at the size of the equipment to create the pressure differential.How to apply the required energy to the pig?
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"Pumping accounts for 20% of the world’s energy used by electric motors and 25-50% of the total electrical energy usage in certain industrial facilities."-DOE statistic (Note: Make that 99% for pipeline companies)
I thought it would be a most obvious joke, so I wasn't worried about any potential misunderstanding. Googling MK-48, quickly pulls up all the torpedo references to anybody not familiar with the designation. Sorry if that wasn't the case.
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"Pumping accounts for 20% of the world’s energy used by electric motors and 25-50% of the total electrical energy usage in certain industrial facilities."-DOE statistic (Note: Make that 99% for pipeline companies)