202 MINERALS YEARBOOK, 1967 
 
Tenneco Oil Co.—were the largest, with daily crude-oil capacities of
25,500 and 10,000 barrels, respectively. The American Gilsonite Co. refinery
at Fruita processed only gilsonite from company operations in Utah; the Morrison
Refining Co. plant in Grand Junction was a small topping plant producing
mainly gasoline and diesel fuel. The fifth refinery, Lubco Oil & Refining
Co., Rangely, had a daily capacity of 5,000 barrels of crude oil. 
 Continental was building a sulfur-recovery unit at its Denver refinery.
To be completed in April 1968 at an estimated cost of $500,000, the unit
was designed for a daily capacity of 18 long tons of sulfur. 
 Refineries in the State processed 13.4 million barrels of crude oil; 11.9
million barrels were from out of State. Wyoming provided most of the out-of-State
oil, 11.1 million barrels, followed by Montana, Utah, and New Mexico. Of
the 33.6 million barrels produced in Colorado, 31.9 million were shipped
out of State. Utah with its Salt Lake City refining and marketing complex
received 18.6 million barrels, chiefly from Rangely and other northwestern
Colorado fields. Other recipients included Ohio (7.5 million barrels), Kansas
(1.8 million), Wyoming (1.5 million), and Indiana (1.3 million). 
 
NONMETALS 
 
 Ceinent.—Portland and masonry cements were produced and shipped by
Ideal Cement Co., Ideal Basic Industries, Inc., from its plants near Laporte
in Lanmer County and at Portland in Fremont County. Shipments of portland
and masonry cements were 2 percent and 5 percent greater, respectively, than
those of 
1966. 
 Ready-mixed concrete companies purchase about two-thirds of the portland
cement. Other customers, in order of quantities of portland cement purchased,
were highway contractors, concrete product manufacturers, building material
dealers, other contractors, and~ other miscellaneous customers. Sixty-eight
percent of portland cement production shipped from plants was by truck, and
the balance, by rail; 92 percent shipped was in bulk form, and 8 percent
in containers. 
 On December 31, 1967, Potash Company of America was merged into Ideal 
Cement Co., forming Ideal Basic Industries, Inc. Each company will continue
to operate its own business, using its former name, as a division of the
parent company. Both companies and the parent company have their executive
offices in Denver. 
 Martin Marietta Corp. engaged Kaiser Engineers Division, Kaiser Industries
Corp., to design the proposed cement plant near Lyons for its subsidiary,
Rocky Mountain Cement Co. Peter Kiewit Sons' Co. was selected as the general
contractor for construction of a plant with an annual capacity of 2.5 million
barrels. A rail spur to the 1,083-acre plantsite was started at the yearend.

 
 Clays.—The output of clay was virtually the same as that of 1966,
even though there were four fewer operations than in 1966. Four-fifths of
the output was captive production. Twenty-four producers from 59 operations
were responsible for the output. Twenty-two operations were in Jefferson
County, nine in Pueblo County, seven each in Douglas and Fremont Counties,
four in Boulder County, three each in Elbert and El Paso Counties, and one
each in Bent, Custer, Huerfano, and Las Animas Counties. 
 Jefferson County produced 68.7 percent of the output. The largest operator
was The Idealite Co. in Jefferson County; the company mined shale for lightweight
aggregate. Idealite, with only one mine, was the only operator producing
more than 100,000 tons. Eleven operators each had production between 10,000
and 100,000 tons; 10, between 1,000 and 10,000 tons; and 2, less than 1,000
tons. 
 Miscellaneous clay and shale comprised 75.8 percent of the clay production;
fire clay, 23.9 percent; and bentonite, 0.3 percent. Bentonite was used for
lining reservoir ponds; fire clay, for making firebrick and block, building
brick, and vitrified sewer pipe; and miscellaneous clay, for making art pottery,
building brick, vitrified sewer pipe, and lightweight aggregate. 
 
 Feldspar.—Output of feldspar, only about one-third that of 1966, was
produced by Lockhart & Sons from the Mica Lode in Fremont County. 
 
 Fluorspar.—Fluorspar production was virtually unchanged from that
of last year. The output, consisting of acid-grade fluorspar, was produced
by Allied Chemical