In the immediate vicinity of Primghar the topsoils and subsoils are silty clay loam. (Galva, Marcus, Primghar, and Sac soils by name.) Clay loam glacial till is at a depth of 30 to 60 inches in most places. There are no mineral assets of commercial value, save rock and gravel. Back in 1873 this dearth of underground wealth was yet to be decided. There was a $1000 reward posted for anyone finding mineable coal reserves. No one claimed the prize.
In the immediate vicinity of Primghar the topsoils and subsoils are silty clay loam. (Galva, Marcus, Primghar, and Sac soils by name.) Clay loam glacial till is at a depth of 30 to 60 inches in most places. There are no mineral assets of commercial value, save rock and gravel. Back in 1873 this dearth of underground wealth was yet to be decided. There was a $1000 reward posted for anyone finding mineable coal reserves. No one claimed the prize.