June, 1921] Steel Molding Sand in Ohio 265 



The plant of the Beach City SiHca Sand Co., which is 

 located about midway between Dundee and Beach City, was 

 opened in 1910. A ledge of about 50 feet of the Dundee sand- 

 stone is quarried and the rock hauled to the mill by gravity. 

 The rock is broken in a jaw crusher and then run through three 

 sets of rolls, after which it is screened, and where desired, 

 washed and dried. Very fine sand is produced by grinding the 

 material in a rotating steel cylinder which contains rounded 

 flint pebbles. The market is chiefly for steel castings, furnace 

 bottoms, cores, potteries, brick yards, and for glass making. 

 From 4 to 5 cars a day are shipped on the average. 



THE ALLEGHENY FORMATION. 



The Allegheny formation contains extremely valuable beds 

 of coal and clay and less valuable deposits of limestone, iron 

 ore, and sandstone. 



Only one sandstone of this formation is now quarried for 

 steel molding sand and that at a single locality — Strasburg, 

 Tuscarawas County. The territory is notable for its resources, 

 as it contains a good bed of the Lower Kittanning or No. 5 

 coal and below it the most refractory clay of Ohio. Following 

 is a composite section: 



Ft. In. 



Lower Kittanning, No. 5 coal ,3 3 



Plastic fire clay 3 6 



Flint fire clay 3 



Plastic fire clay -1 6 



Sandstone, measured! 58 



The White Rock Silica Sand Co. This is the one plant which 

 produces steel molding sand from the Allegheny formation. 

 The sandstone which is shown in the above section measures, 

 where quarried, 58 feet, but the top 8 feet are shaly. The rock 

 is coarse grained, massive, gray to buff in color, and. carries in 

 places black coaly material, which is sorted out by the workmen. 



A gasoline engine hauls the rock to the mill, where it is 

 broken in a jaw crusher and then reduced to sand by two sets 

 of rolls. The sand is screened for steel castings, cores, and 

 brick yards. Furnace sand is not screened. The plant does 

 not have a washer. A great quantity of raw material is 

 available. 



