STATISTICS ON MINERAL PRODUCTION IN FLORIDA 
DURING 1917. 
COLLECTED IN CO-OPERATION BETWEEN FLORIDA STATE GEOLOGICAL 
SURVEY AND U. S. GEOLOGICAL SURVEY. 
The value of minerals produced in Florida during* 1917 is con- 
siderably in excess of that of the preceding year. The total min- 
eral production during 1916 is valued at $5,859,821, while that for 
1917 is valued at $7,534,834. 
BALL CLAY OR PLASTIC KAOLIN. 
Three plants were engaged in mining ball clay in Florida dur- 
ing 1917. These were the Edgar Plastic Kaolin Company, Edgar; 
the Florida China Clay Corporation, Okahumpka; and the Lake 
County Clay Company, Okahumpka. The ball clays of Florida 
are white burning, refractory clays notable for their plasticity. 
They occur in association with sand from which they are separated 
by washing. The value of the ball clay produced, although ' not 
separately given, is included in the total mineral production of the 
State. 
BRICK AND TILE. 
The total number of common brick manufactured in Florida 
during 1917 was 28,457,000. In addition to building brick there 
was produced also drain-tile and fire-proofing brick. The total 
value of brick and tile products for the year 1917 was $224,606. 
The following firms in Florida reported the production of brick 
during 1917: 
Barrineau Brothers, Quintette. 
Campville Brick Company, Campville. 
Clay County Steam Brick Company, Green Cove Springs. 
Dolores Brick Company, Molino. 
Florida Industrial School for Boys, Marianna. 
Gamble & Stockton Company, 108 W. Bay St., Jacksonville. 
Glendale Brick Works, Glendale. 
G. C. & G. H. Guilford, Blountstown. 
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