Detecting around Metal Bleachers...Am i screwed?

[Gabev71]

I work at a Private University that has a football stadium that was constructed in 1950, its probably 75% metal bleacher seats that sit over dirt. When doing work over in the stadium ive taken the time to walk down a few rows just glanceing at the top of the dirt and find coins that have been there awhile and have found 2 different types of gold earrings in the last week. The football program was discontinued in 95 but soccer and other events are still held in there, so thats why im finding stuff on the surface. Since the stadium has been here for 60 years there has to be a treasure of items waiting below the dirt. My question is if i try using my metal detector between all these seats am i just screwed or am i better off just sitting down and just digging down a few inches and turning all the dirt over thru the entire stadium. Here is a picture of what im dealing with, as you can see its alot of metal bleachers.

 

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[Tom_in_CA]

mariposa gold, you maybe don't remember, but we met on the beach here, in Seaside, in the early to mid 1990s. You had come over to the coast to visit some relatives or something, and were hitting the beach while here.

No doubt, anything you can think of in Monterey county, has been long since exploited by us old-timers here

 

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[RustyGold]

If anybody asks you can say you're just "cleaning up" underneath the Bleachers!