1950 1955 
 960 1965 1970 
216 
 
 
 
 
 
 
 
 
 
0 
 
0 
 
 
C 
0 
 
 
 
E 
 
w 
 
-J 
 
> 
40 
 
 
 
 
 
 
 
 
 
 
30 
 
 
 
 
 
20 
 
 
 
 
 
I0 
 
 
 
 
 
0 
945 
MINERALS YEARBOOK, 1967 
Figure 1.—Value of mineral production in Connecticut 
 
 
Table 2.—Value of mineral production in Connecticut, by counties (Thousand
dollars) 
County 
1966 
1967 
Minerals produced in 1967 in order of value 
Fairfield                     
Hartford                     
Litchfleld                     
Middlesex                    
New Haven                   
NewLondon                  
Tolland                      
Wiodham                    
Undistributed '                
$1,087 
7,006 
2,543 
1,580 
5,463 
1,097 
W 
W 
2,570 
$1,092 
6,189 
2,207 
1,656 
6,053 
1,265 W 
W 
2,157 
Sand and gravel. 
Stone, sand and gravel, clays. 
Stone, sand and gravel, lime, 
Feldspar, sand and gravel, stone, clays, mica. 
Stone, sand and gravel, clays. 
Stone,sandand gravel. 
Sandandgravel. 
Stone, sand and gravel. 
Total                  
21,346 
20,619 
 
W Withheld to avoid disclosing individual company confidential data; included~
with "Undistributed." 1 Includes sand and gravel and gem stones that cannot
be assigned to specific counties, and values indicated 
by symbol W.