THE MINING AND QUARRY INDUSTRY 



939 



cereals, their use in other industries has been slowly increasing 

 during the last 10 years. The small corn mills distributed through- 

 out the Southern States still furnish an important market. 



In the year 1904 the output of millstones in Ulster county 

 was valued at $21,476. The production was smaller than in the 

 previous year, owing principally to the dullness in the cement 

 trade. There were 18 firms actively engaged in the business. 



The varieties of mineral paint that are made from materials 

 mined in New York State include metallic paint, mortar colors, 

 slate pigment and sienna. 



For metallic paint and mortar colors some form of iron ore, 

 generally hematite or limonite, is commonly employed, but only 

 a few localities are known where the ore possesses the requisite 

 qualities of color and durability. The fossil hematite from the 

 Clinton formation has been found to be well adapted for the purpose 

 and is the material most widely used in this country. The ore is 

 derived from mines at Clinton, Oneida co., and Ontario, Wayne co. 

 Shales and slates containing large amounts of iron oxid are also 

 ground and sold for metallic paint. The principal supplies come 

 from near Randolph, Cattaraugus co., and Eagle Bridge, Rens- 

 selaer co. 



The product known as mineral black is made by grinding dark 

 colored slate found in the Hudson river region ; and the red slate of 

 Washington county is used to some extent as a pigment. 



Sienna, a variety of ocher, occurs near Whitehall. The deposit 

 is a thin bed in glacial drift and has been worked on a small scale. 



The production of mineral paint in 1904 was as follows: metallic 

 paint and mortar color, 4740 short tons, valued at $55,768; slate 

 pigment, 3132 short tons, valued at $23,876. These totals include 

 only the output made within the State from local materials and do 

 not represent the full importance of the industry, since some of 

 the raw product is shipped elsewhere for manufacture. An output 

 of 6970 tons was reported by three firms, who sell the crude ore 

 and slate to paint grinders. 



The following companies were engaged in the mining or manu- 

 facture of mineral paints during 1904. 



MINERAL PAINT 



NAME 



LOCATION OF OFFICE 



Worcester Mass. 



Clinton 



Clinton 



Algonquin Red Slate Co. 



Charles A. Borst 



Clinton Metallic Paint Co. 



