What was it? I arrived too late.
Dec 7, 1941: “200,000 tons of steel relocated to sea floor”
As others have noted, derived from RTFA (read TFA), which comes from RTFM (read the fine manual).
I don't know if RTFA/TFA originated at Slashdot, but both were certainly heavily used there, as noted in ... this fine Wikipedia article:
It sounds like an old timey quote, but a cursory Google search turns up nothing. I can't even see who wrote the article!