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India's largest coal handling agency - Mjunction

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Expert SpeakLarge diameter boring machines: Needof the hour?J.P. PandaThe recently conducted mission to rescue 33 minerstrapped in the San Jose mine in Chile was a remarkableexample of sheer human grit and determination.However, in the entire episode, one simply cannot ignorethe role played by technology in the form of the “SchrammT130XD” category drill employed in the plan. It was thisdrill which enabled rescuers to bore a hole a full 28 inchesin diameter, which eventually created the passage throughwhich the miners were able to come out in a specially designedcapsule.The remarkable feat of drilling a 28 inches (71 cm) diameterhole to a depth of 588 metres at the San Jose Mine is a lessonto all concerned with safety in mines and leads us to ponderwhether such equipmentshould be an integral part ofour rescue stations in India.With safety of miners beingof prime importance in theentire <strong>coal</strong> extraction process,one cannot help but wonderwhether such a drill should bepresent in the rescue stationsof Coal India Limited (CIL), orbe a part of the <strong>coal</strong> subsidiarycompanies which are into largescale underground miningsuch as Western CoalfieldsLimited (WCL), Bharat CokingCoal Limited (BCCL), EasternCoalfields Limited (ECL)and South Eastern CoalfieldsLimited (SECL).The Schramm T130XD is aheavy duty, heavy hoist, carriermounted drill rig. The T130XDutilises the latest concepts inmast design and technology.Telescoping constructionpermits long head travel andworking height to allow use ofRange III casing, yet it has shortoverall length in the transportposition. With a front overhangof less than 6 feet, the T130XDwill get you to the jobsite whenaccess roads require a compactmachine. Heavy pullback capacity makes this machine a perfectchoice for shallow oil and gas, <strong>coal</strong> bed methane drainage anddeep water well applications as well.Some of the integral features of this remarkable piece ofmachinery are listed below:♦♦1,30,000 lbs (59,090 kg) actual pull up♦♦28 inches (711 mm) table opening♦♦760 hp deck engine♦♦1350/350 – 1150/500 variable volume compressor♦ ♦ (38 cu m/min @ 24.1 bar & 32.6 cu m/min @ 35.5 bar)♦♦50 feet (15.25 m) of clear head travelCOAL INSIGHTS 45 November 2010

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