Lesley.] 1" [Jan. a. 



The bank shows that some 20,000 tons of ore have been removed. 

 With the above depth of wash and lump ore 27 feet or 9 yards each 

 running mile yields 15,000 cubic yards, or 22,000 tons of ore for each yard 

 mined back into mountain and cut down to the bottom of the bed for 

 that distance. 



Considerable ore has been mined around Cleversburg, the Chestnut and 

 Coffee Banks southeast of the town having been extensively worked. 



With reference to the general quantity of ore along the line of the 

 Harrisburg and Potomac Railroad from Dogwood Run on the east to 

 Cleversburg on the west, the above detailed estimates made at each 

 point where the development was sufficient, are enough to show that the 

 amount is indefinitely great, and render any further figures unnecessary. 



The quality of the ore varies very much. At the eastern end the ores 

 taken from banks (1) to (5) inclusive, used at Boiling Springs Furnace, 

 are very slightly cold-short, permitting the use of 75 per cent, of these 

 ores to 25 per cent, of magnetic or limestone ores. 



At Papertown (No. 7) the ores are more cold-short, 50 per cent, being 

 used in the furnace. 



At Big Pond (No. 10) the ores are neutral and are used unmixed. 



At Clever's Bank (No. 18) the ores are reported to be quite cold-short. 



Messrs. Grove & Co., of Danville, however, who have used these ores, 

 state that they worked well when mixed with other ores and made a fine 

 foundry iron. Messrs. Wister of Harrisburg have also used them. 



A general examination of the past and present working of the furnaces 

 running upon these mountain ores shows that it takes about 2£ tons of 

 ore to make a ton of metal. 130 to 140 bushels of charcoal may be put 

 down as the average of fuel required. 



B. LIMESTONE ORES.— As shown on the map, these limestone he- 

 matites have been examined in many places. The show consists in most 

 places either of a very heavy outcrop or abandoned shallow pits from which 

 ore had been taken in quantities ranging from 100 to many thousand tons. 

 Some of the localties are now in working. The description of them all 

 would be mere repetition ; one sketch, Fig. 18, will serve as a type of 

 their character. 



No. 19. Gutthart Bank. — Lies 3^ miles east 20° south from Newville. 



As shown in the above rough sketch, the working is done in a crevice, 

 the limestone shutting in on both sides. The bottom of the ore-bearing 

 clay has not been reached. At present about 12 to 14 tons a day ait- 

 shipped. Water is pumped for washing. 



At Cressler's Bank, 2 miles southeast of Shippensburg, there is a large 

 excavation showing that probably 20,000 tons have been removed. It 

 was abandoned on account of water. Mr. Cressler says that the ore did 

 not lie regularly bedded with the limestone ; and that when the water 

 drove him out he was working 35 feet of pipe ore. 



