388 
MINERALS YEARBOOK, 1967 
 
quicklime for manufacturing paper. The lime was regenerated at the company's
oil-fired rotary kiln and reused; losses were minimal and were supplemented
with purchased material. 
 
 Nitrogen Compounds.—Northern Chemical Industries, Searsport, Waldo
County, produced anhydrous ammonia for use as a fertilizer component. 
 
 P~at.—Peat production, confined to Washington County, was of the sphagnum
variety and was used principally as a soil conditioner. Preliminary talks
were underway to put all peat producers in Washington County under a single
management. The new organization would be known as Northeast Peat Mine Co.,
Inc. 
 Sand and GraveL—Output of sand and gravel continued to decline for
the second consecutive year and was at its lowest level since 1963. The decline
was attributed to a substantial decrease in consumption by the Maine State
Highway Commision, the State's largest single user. Demand for sand and gravel
fell sharply with the completion of the last 41 miles of Interstate 95 between
Medway and Oakfleld. 
 
 The Commission reported production of paving sand and gravel in all counties;
output was obtained both by the Commission's own crews and by workers under
contract. Aroostook and Penobscot Counties remained the principal producing
areas; however, output of sand and 
 
Table 5.—Sand and gravel sold by producers, by classes of operations
and uses 
(Thousand short tons and thousand dollars) 
 196 
Class of operation and use ————— Quantity 
6 
—          Value 
19 
 — Quantity 
67 
 
Value 
Commercial operations: 
Sand: 
 Structural 280 Paving 300 Fill 279 Engine 4 Other 72 
 Total 935 
 
Gravel: 
 Structural 199 Paving 680 Railroad ballast 26 Fill 199 Other 2 126 
 Total 1,230 Total sand and gravel — 2,165 
 
Government-and-contractor operations: 
Sand: 
 Paving 3,065 
 Other 238  Total 3,303 
 
Gravel: 
 Paving 9,566 Fill 2 
Other                                                      
 Total 9,568 Total sand and gravel 12,871 
 
All operations: 
 Sand 4,238 
 Gravel 10,798 
 Total 15,036 
$166 
270 
105 
6 
47 
252 
246 
259 W 
1 122 
$201 
222 
125 W 
177 
 
594 
879 
625 
 
184 
726 
9 
79 
52 
211 
672 
(1) 
126 
188 
215 
807 
(1) 
69 
142 
 
1,050 
1,197 
1,233 
 
1,644 
2,076 
1,858 
 
1,400 
183 
1,957 
268 
738 
109 
 
1,583 
2,225 
847 
 
3,799 
1 
7,320 
3 
3 
2,661 
1 
1 
 
3,800 
7,326 
2,663 
 
5,383 
9,551 
3,510 
 
2,177 
4,850 
3,104 
8,523 
1,472 
3,896 
 
7,027 
11,627 
5,368 
W Withheld to avoid disclosing individual company confidential data. 
' Includes railroad ballast, engine, and other sand. 
2 Includes miscellaneous, other, and railroad ballast (1967) gravel.