OTOH, when large concentrations of metal (buildings, vehicles) are disposed of, they’re almost always recycled. Many such large concentrations would survive a collapse. I’m not sure how long it would take for iron/steel buildings to mostly rust away, or how much steel would be buried safe from rust.
OTOH, when large concentrations of metal (buildings, vehicles) are disposed of, they’re almost always recycled. Many such large concentrations would survive a collapse. I’m not sure how long it would take for iron/steel buildings to mostly rust away, or how much steel would be buried safe from rust.