Ask an HVAC guy what he's paying for sheet metal.

If a home has knob and tube and you are still finding ground wires.. that wire is going to a metal drain for the house.

You can always spot them: there have a metal back with no exterior wire grid or tubing and some cardboard peeking out the bottom, where the compressor is.

Metal- get a scrap guy to haul off for free.3. 

If there's a problem and the repair fails, redo the repair with JB ExtremeHeat metallic paste or its imitators, which goes up to 1000 degrees and higher.

Well, upon finally able to evict “low and behold” signs of aluminum used for burning drug material, metal pipe were found upon inspection for eviction process.Had to wait (through insurance) for the proper testing, and etc.Heard through word of mouth “over the phone” from the testing agency company that all but one room tested positive for what sounded to be a medium high amount for fentanyl and maybe the other drugs.Now I am waiting for the test results officially in writing. 

I uses the large metal building in the back as my workshop and rent the house separately.

A pair delivered is $350 and nice enough for my $1k/mo townhomes.I also have a metal hauler I text with the address to pick up the pile. 

In dressing millstones, the metal tools used, caused chips of metal to embed themselves under the dresser's skin.

@Mark NolanI have a Roth IRA, metals and stocks.