Mine Safety and Health Administration (MSHA) - Underground Mine Rescue Equipment and Technology (RFI) - Hearing Presentation -
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Radio Corporation of America RCA: RCA Transistor Manual Including Rectifiers, Silicon Controlled Rectifiers, Varactor Diodes and Tunnel Diodes (Technical Series SC-11): RCA: Amazon.com: Books
![In the infamous Burro Schmidt's tunnel while Jonny's making a radio contact on his mobile HAM radio. As usual, we had the place all to ourselves. What an awesome tunnel! <br> <br> In the infamous Burro Schmidt's tunnel while Jonny's making a radio contact on his mobile HAM radio. As usual, we had the place all to ourselves. What an awesome tunnel! <br> <br>](https://mountainproject.com/assets/photos/climb/106723403_medium_1494135333.jpg?cache=1701316265)
In the infamous Burro Schmidt's tunnel while Jonny's making a radio contact on his mobile HAM radio. As usual, we had the place all to ourselves. What an awesome tunnel! <br> <br>
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