The California Department of Conservation's Office Of Mine Reclamation estimates that there are approximately 47,000 abandoned mines throughout the State. Open abandoned mines present numerous hazards:
* Most mines are not fenced or sealed shut.
* People can fall hundreds of feet.
* Mines can collapse.
* Mines can flood.
* The air can be toxic.
* Lethal chemicals can be present.
* Stay on designated routes.
* Know where you are.
* Remain alert.
* Know the terrain. Maps are available through BLM and Friends of Jawbone.
* Be careful when OHV riding in East Kern County, which is a mining area.
* Never ride alone.
* Both riders should carry cell phones.
* Wear the proper riding equipment.
* Tell somebody where you're going.
* Before you crest a hill, know what's on the other side.
