operation was under the direction of a celebrated mining 

 engineer, C. W. Kempton, who for many years maintained 

 engineering offices in New York City. 



Unfortunately, the inception of this enterprise coincid- 

 ed with the general and disastrous collapse of the mining 

 industry of Maine when the copper producing mines at Blue 

 Hill and the silver mines of Sullivan, in Hancock County, 

 were forced to abandon all their activities owing to the world 

 wide depression in the markets for these metals following 

 the financial failure of the French syndicate headed by 

 Secretan, the ambitious promoter who at one time nearly 

 succeeded in his effort to secure control of all the copper 

 mines of the world. 



These circumstances, coupled with the fact that the cor- 

 poration, though capitalized at half a million of dollars, was 

 most slenderly financed, never, in so far as I am able to learn, 

 having had as much as five thousand dollars in actual cash 

 funds, make it easy to understand why the enterprise came 

 to an early and untimely end. In truth, it is surprising that 

 so much was actually accomplished in the short period of the 

 company's operation. As it was, a two compartment shaft, 

 well timbered and equipped, was sunk to a depth of one hun- 

 dred feet on the mineralized belt of rock carrying the tinbear- 

 ing veins. Of course, no ore bodies were blocked out and so 

 the presence or absence of commercially minable tin was 

 never conclusively demonstrated. 



During the years, following the discovery by Chipman, 

 down through the period of activity of the obsolete Maine Tin 

 Mining Company, the locality was visited, examined and re- 

 ported on by many of the leading mining geologists of Ameri- 

 ca, none of whom ever disputed the contention that the dozen 

 or more veins crossing the brook carried tin ore (cassiterite) 

 in association with the unusual group of minerals char- 

 acteristic of and invariably accompanying tin in the other 

 tin fields of the world. These accessory minerals, in the or- 

 der of their importance, ranked in accordance with their 

 chemically accepted significance as infiuencing the deposi- 

 tion of tin, are fluor-spar, tourmaline, the peculiar micas 

 known as margarite and lepidolite, beryl, and galena or sil- 

 ver-bearing sulphide of lead. All these and other associate 

 minerals, products of fluid or gaseous emanations from deep 

 seated magmas, evidencing metalliferous deposition under 

 conditions of extremely high temperatures and great press- 

 ures, are found in abundance in the veins at Winslow. The 

 veins themselves, all observers have concurred in saying, 

 are true fissure veins, varying in width from an inch to a 



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