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Politics : The Trump Presidency -- Ignore unavailable to you. Want to Upgrade?


To: combjelly who wrote (80618)7/1/2018 10:35:28 PM
From: robert a belfer  Read Replies (1) | Respond to of 356230
 
Seems to me that somewhere in mid 60's Jr High I was taught that

Bituminous coal was dirty and Anthracite coal was clean.

But then I was also taught the electricity flows from positive to negative and that there was such a thing as centrifugal force.