Please know how much I enjoy your site and how much I look forward to the new content you offer. In recent posts I have written about room and pillar mining, where the miners drive tunnels through the relatively horizontal coal seam, until they come to the edge of the property. This is a great moment to think about the future and to be cheerful, because now is the best time. What am I missing? In larger units volumes a thousand barrels a day becomes 1 kbd and a million barrels a day becomes 1 mbd.
nest...