As you travel and windup Finleyville -Elrama Road in the Finleyville area from PA837 you will notice a very official looking gate entry up into the hill side known as American Way
While today its in private hands it was once the US Defense Dept Strategic Mineral Depository where large piles of Iron Ore , Magnesium, Molybdenum etc where stored in case of a War breaking out and US would not be able to obtain it.
Much like the Strategic Oil Reserves the Government Keeps .
The site was abandoned in 80s after it was determined it was no longer needed and minerals sold off after so many mills which would have used the reserve had closed down.Including Homestead where much Armored plate was once made .
The gate has since been fixed up and area repurposed and most people traveling the road have no idea the significance this once Cold war storage facility played in protecting the country I also believe part of it may have also served as Nike Missile or defense site site further up the hill were old military type structures that once existed all that's left is the fence
Obviously due to sensitive nature of this subject little is available for public knowledge as it is still a security concern . But their was massive planning when US was threatened by the USSR we will never know about .
Thank God there was this planning and was never needed.