Coal and lead can be mined in Iowa.
Limestone is the primary mined product of Iowa.
Coltan is mined in Eastern parts of Congo and Central Africa
The states of South Dakota and Nebraska both border Iowa. The eastern border of South Dalota is with Minnesota and Iowa. The eastern border of Nebraska is with Iowa and Missouri.
Lead and silver were mined at Leadhills and, for a time, gold was also mined there.
Fluorspar, lead, coal, and zinc are mined in Illinois.
Eastern Goldfinch (aka American Goldfinch)
lead
There are 2 (see related question)Lincoln (capital of Nebraska - eastern border is Iowa and Missouri)Pierre (capital of South Dakota - eastern border is Minnesota and Iowa)
The address of the Eastern Iowa Aquarium Association is: Po Box 2327, Cedar Rapids, IA 52406
The main lead mineral is galena (PbS), which contains 86.6% lead
Lead is a naturally-occurring element that is mined from underground.