From the Ohio Dept of Natural Resources:
| GeoFacts No. 1 | - | Bedrock topography of Ohio [530 KB PDF] |
| GeoFacts No. 2 | - | Industrial-mineral mine-permitting procedures in Ohio. |
| GeoFacts No. 3 | - | Earthquakes and seismic risk in Ohio [171 KB PDF] |
| GeoFacts No. 4 | - | Ohio Shale concretions [580 KB PDF] |
| GeoFacts No. 5 | - | Ohio trilobites [289 KB PDF] |
| GeoFacts No. 6 | - | Isotelus: Ohio's State Fossil [285 KB PDF] |
| GeoFacts No. 7 | - | The Scioto Saline--Ohio's early salt industry [459 KB PDF] |
| GeoFacts No. 8 | - | Landslides in Ohio [247 KB PDF] |
| GeoFacts No. 9 | - | Gold in Ohio [488 KB PDF] |
| GeoFacts No. 10 | - | The Teays River [1.53 MB PDF] |
| GeoFacts No. 11 | - | Rocks and minerals mined in Ohio and their uses [121 KB PDF] |
| GeoFacts No. 12 | - | Mine subsidence [342 KB PDF] |
| GeoFacts No. 13 | - | The geology of Ohio--the Precambrian [243 KB PDF] |
| GeoFacts No. 14 | - | History of coal mining in Ohio [299 KB PDF] |
| GeoFacts No. 15 | - | Coal mining and reclamation [128 KB PDF] |
| GeoFacts No. 16 | - | Coal and electricity [138 KB PDF] |
| GeoFacts No. 17 | - | Fossil collecting in Ohio [212 KB PDF] |
| GeoFacts No. 18 | - | Rock and mineral Clubs in Ohio [136 KB PDF] |
| GeoFacts No. 19 | - | Sand and gravel [154 KB PDF] |
| GeoFacts No. 20 | - | The geology of Ohio--the Cambrian [188 KB PDF] |
| GeoFacts No. 21 | - | Where to see Ohio's geology [166 KB PDF] |
| GeoFacts No. 22 | - | The effects of the great New Madrid earthquakes in Ohio [176 KB PDF] |
| GeoFacts No. 23 | - | A brief summary of the geologic history of Ohio [114 KB PDF] |
| GeoFacts No. 24 | - | Tiny hidden treasures--the microfossils of Ohio [318 KB PDF] |
| GeoFacts No. 25 | - | High-calcium limestones in Ohio [220 KB PDF] |
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