| It is worth recalling the history of this treatment, which began when American, James Douglas, discovered extensive pitchblende deposits on his Western mining properties. |
| It was a waste product from the production of radium from the pitchblende deposits around Great Bear Lake in northern Canada. |
| The most common ore of the element is pitchblende, although it is also present in other minerals, such as uraninite, carnotite, uranophane, and coffinite. |
| More illusive than gold and many times more precious, radium, the product of pitchblende, had somehow gotten into his blood. |
| With his dog team on his second journey in search of pitchblende he had traveled fifty miles, and the day was still young. |
| During the early years of radium and uranium refinery operations in Port Hope, highgrade pitchblende ores were processed. |
