| In the later nineteenth century, a changing economy fostered songs and stories of cowboys, lumberjacks, miners, oil drillers, and railroaders. |
| To get more reliable data, the ice drillers went to a second location, some 1400 kilometers distant from Camp Century. |
| The drillers did most of the mucking out of the heading before setting up the drills. |
| Kansan drillers are currently engaged in trying to identify the hot spots where drilling can produce oil and gas in abundance. |
| Many companies will be involved in the project from construction contractors to drillers to transportation firms. |
| The rock layers surrounding coal lodes were penetrated and separated by drillers and explosives. |
