Saw that price on a website, and it coincided with that price on another page, so I assumed it was correct, although the prices varied slightly by US region (East, West, Midwest, etc.)... I'm in NJ.
But at .58 per pound, that makes each tab now worth about .0004 cents.
I'll bet that in 200 years, detectorists will still be finding them.
I wonder what detecting will be like then....
Perhaps future detectors will be drone-like, able to spot a coin from 100 ft in the air, tell you the depth, composition, date and value. Maybe use a lazer to drill a hole for you to extract it, without even getting your hands dirty.
Or maybe there will be no more metal left at all (all consumed), and money, especially coins, might be plastic (as in credit cards) or some man-made material we can't even think of yet, if they are even needed at all. But there will still be pulltabs...