"METEORITE MEN"..
They walk around deserts with a magnet on a stick.. as professionals it should be the strongest magnets available.
They were on again last week. At one point they were talking about their top quality magnets...
The one glued on their pick/mattock digger, looks like 4 inches X 1 inch....He said was rated at 73 pounds lift.
Last week on a science show reviewing the virtues of IRON, they took a large bowl of a top name brand cereal
that advertised " FORTIFIED WITH DAILY ADULT IRON REQUIREMENT ".....
They pulverised the cereal to a fine powder then dragged a magnet through it several times..
There it was.... ...IRON FILINGS
They didn't say if it was tempered or rust treated iron