Operation and maintenance of a deep-well water-level measurement device, the "Iron Horse"

The deep-well investigative device, commonly called the Iron Horse, has been used primarily for measuring deep water levels in boreholes and wells. The device has proven useful in measurements during hydraulic testing of wells with water levels as deep as 2,600 feet (792.5 metres). The device may also be used for obtaining water samples, sounding depths, and determining vertical fluid velocity. Extensive use of the device at the U.S. Energy Research and Development Administration's Nevada Test Site has provided the necessary experience to refine methods for proper calibration and maintenance of the Iron Horse.