18 APRIL 2023 WorldWide Drilling Resource® Power and Efficiency at your Fingertips Adapted from Information by Central Mine Equipment (CME) Ever wonder why there are so many CME-75 drills out there in the field? It’s really quite simple. With almost 50 years of field experience, the CME-75 has earned a reputation second to none for outstanding performance and dependability. The CME-75 is powered by a Cummins QSB 4.5 turbocharged diesel engine meeting tier-4 final emissions. Its hydraulic feed and retract system provides 30,000 pounds of retract force and 20,000 pounds of down pressure. The 72-inch stroke, vertical drive system has twin hydraulic cylinders mounted in line with the drill spindle so pulldown and retract forces are applied directly to the drilling tools. For exceptional drilling efficiency, the feed system has two separate controls. One gives manual control of the feed and retract and the other features detent feed and fast retract positions. Rapid retract rates of up to 95 feet per minute allows you add or remove drilling tools quickly. Detent feed controls let you dial in a specific feed rate and pressure. This system is extremely advantageous in core drilling and other operations requiring precise control of feed. Since the two controls are isolated, you can use the manual control without changing settings for the detent feed control. All drilling and set-up controls are logically arranged on the control panel located at the drill operator’s station. The location of all primary controls is the same on all CME drills so operators can move from one machine to another with confidence. The most commonly used functions, such as the feed, hydraulic hoist, and sliding base levers, are staggered for easier identification and operation. A lockout position for the clutch lever prevents accidental engagement. The rugged mechanical rotary drive provides 10,445-foot-pounds of torque, plus high rotation speed when you need it. You get the torque you need for auger drilling, as well as rotation speeds over 740 rpm for rotary or core drilling applications. Other optional rotation speed and torque combinations are also available, including a high-torque rotary drive with 13,225-foot-pounds of torque. With five forward gears and one reverse, there’s a rotation speed and torque combination available for just about any situation. The transmission is connected to the drill engine through a heavyduty 13-inch clutch. Since the transmission does not travel vertically with the spindle, you won’t find yourself unable to change gears when you’re at the top of a feed stroke. The patented emergency spindle brake can stop rotation in less than a revolution. This system is activated by two conveniently located push button switches as well as strategically located multidirectional wobble switches. ENV Mfg., Scree Atlan Inc. n & tic E-mail: atlantic@ce Atlantic-Screen.c Manufactu 302-684-3197 Manholes j Pipe Clear PVC j Inline Chemical Mixers j ell Rehabilitation Produ jW .net om rers cts DE 19968 Milton, 142 Broadkill Rd ½” - 24 ranging f Perforated of Slotted Fax: 302-384-0643 more! MUCH And j Bailers Sampling j Locking Caps j Filter Sock j Bentonite j ” rom Pipe and Why doesn't a drought go away when it rains? There are a few reasons for this. During a drought, a lot of rain is needed to make up for water deficits, fill reservoirs, and recharge aquifers. During hot summers, a lot of rain gets evaporated before getting the chance to replenish water supplies. In terms of replenishing groundwater supplies, it may take a long time for water falling on the earth’s surface to reach and recharge aquifers. The deeper the aquifer, the longer it takes for rainfall to get there.
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