JavaScript is disabled for your browser. Some features of this site may not work without it.
| Authors Name |
|---|
| Kentucky Department for Environmental Protection [1] |
| Kmec, Julie A. [6] |
| Magnuson, Nancy [1] |
| Skaggs, Sheryl L. [1] |
| U.S. Mine Safety and Health Administration [1] |
| Zurlaquova, Zarrina. [1] |