300 dpi: (d898-1.jpg)
640 pixels wide: (d898-1.jpg)
 Image Number D898-1 |
A tractor is used to inject Telone II into the soil at a depth of 46 inches. Following the tractor is a disk and ring roller—used to compact the soil and close any fractures, thus reducing emissions to the atmosphere.
Photo by U.S. Salinity Laboratory.
