Be very careful. The FBI is still looking for Jimmy Hoffa. Any tip may send "The Suits" out to a stash near you. Back in 2006, they had a "solid" tip that he was buried under a horse barn 30 miles out of Detroit.
Costs of Hoffa dig:
Barn replacement: $160,000
Excavation: $24,741
Portable horse stalls: $18,270
Electrical: $7,445
Anthropology services: $5,418
Storage: $750
Portable toilets: $680
Other charges: $8,000
The above does not include the cost of 40-50 FBI agents to sift through the upending of this poor horse barn, which was built in the 70's (he disappeared in 1975)
Jimmy cannot be in the Sears Tower, it was built before he went missing.
That wasn't their last search. A couple years ago, they took wood flooring out of an old house in Detroit, to see if the stains were his blood stains. Last year, there was a search in a dilapidated neighborhood with a digger, but no one could get the FBI to say what they were looking for.
I just chuckled when I read all of your replies.
"Unearthing" long lost things is always enlightening. Good luck AND don't find Jimmy. Although, maybe the Feds would replace your stash with a better one.