THE IRKIGATION AGE. 



415 



DRILLING 30-INCH WELLS 



(Continued from page 395.) 



in pure sand are made to stand open without casing 

 for a considerable time. By this process in many cases 

 the drill rods are not pulled until the well is drilled the 

 required depth. 



If rock is encountered, when drilling by the 

 rotary process, the drill rods are drawn from the well 

 and a core barrel substituted for the earth drill. This 

 consists of a tube usually 6 to 20 feet long and the 

 diameter of the drill hole and having a slot extending 

 diagonally upward several inches from its lower edge. 

 Crushed steel, sometimes called steel shot, is fed down 

 the drill pipe from the surface, a handful at a time, 

 and is carried by the circulating water and the slot in 

 the barrel under the edge of the bit and the rock is 

 cut by abrasion. This barrel cuts a circular slot, or 

 kerf, and produces a central core of rock which is 

 usually lifted in small wells by dropping pebbles down 

 the drill rods and wedging the core in the barrel and 

 in the large wells by special gripping devices which 

 are lowered into the drill hole after removing the drill 

 tools. 



Rock formations can also be drilled with the 

 usual rock drilling tools attached to a. walking beam 

 connected with this machine and reamed out to the 

 required size with the rock reamers which have been 

 extensively used by well drillers for many years, but 

 the well drillers that have been most successful in 

 putting down the large wells required for turbine cen- 

 trifugal pump installations, use the rotary process 

 almost exclusively. 



The writer is indebted to the American Well 



Works, Aurora, 111., for the illustrations accompany- 

 ing this article, and also for much of the information 

 relative to drilling large wells. 



BITTER ROOT FINANCES 



Some interesting facts concerning the Bitter 

 Root Valley Irrigation Company are contained in 

 a report of G. M. P. Murphy, an expert, to the 

 creditors of the Assets Realization Company. 



The Assets Realization Company is a Chicago 

 concern, at the head of which was Ira M. Cobe of 

 Chicago, president. The company has $10,000,000 

 capital stock, all 6f which, it appears from the re- 

 port of the expert, is worthless. Nevertheless the 

 company paid dividends at the rate of 7 per cent to 

 October, 1912, when it was increased to 8. 



"The Bitter Root Valley Irrigation Company 

 stands on the books of the Assets Realization at 

 $5,418,334," says the Murphy report. "This is the 

 most pretentious asset in the list. It consists of 

 irrigable and non-irrigable land in the Bitter Root 

 Valley, Montana. The persons who bought prop- 

 erty in this valley and gave mortgages were extraor- 

 dinarily poor pay. The reports giving the condi- 

 tion of the notes and accounts receivable overdue 

 on July 1, 1914, says: 



" 'On that date the mortgage installments past 

 due aggregated $402,581, and the contract install- 

 ments past due aggregated $432,543. On Sept. 1, 

 1914, out of 286 outstanding mortgages 211 were 

 in default, and out of 252 outstanding contracts 115 

 were in default.' " 



pHINK what it means 

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 night if desired the com- 

 bined power of 30 to 35 

 horses and 10 to 15 men- 

 ready at a moment's notice to 

 plow, disc, harrow, seed, har- 

 vest, build roads, irrigate, 



thresh and do numerous other power jobs, all 

 at the minimum expense for fuel and main- 

 tenance. That's what you get when you 

 buy a time-tried and time-proven 



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THE AULTMAN & TAYLOR MACHINERY COMPANY 



BRANCHES: 



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