THE MINERAL INDUSTRY OF MONTANA 499SuIfur.—Production and the averageunit
value of high-purity elemental sulfur 
 
and Jefferson. Counties. The U.S. Army Corps of Engineers also contributed
to the increase with greater amounts of stone for riprap and rockfihl at
Libby Dam, Lincoln County. Stone was produced in 35 counties; Jefferson County
led in stone production (1.1 million tons), followed by Dawson (800,000 tons),
Lincoln (800,000 tons), and Gallatin (400,000 tons) Counties. 
 Basalt, granite, limestone, marble, miscellaneous stone (unclassified as
to type), and sandstone were produced. The basalt, granite, and miscellaneous
stone were used largely in road construction (2.5 million tons), but some
(600,000 tons) was used as riprap and rockfill in dam construction. 
 Limestone output of over 1 million tons, valued at $1.3 million, was used
largely for manufacturing cement (700,000 tons), for making lime (200,000
tons), for sugar refining (80,000 tons), and for metallurgical purposes (50,000
tons). Some was used in road construction, and limestone from the Warren
quarry was shipped to Cobrado for corn silage mix by Big Horn Limestone Co.
Limestone was produced in Broadwater, Carbon, Deer Lodge, Gallatin, and Jefferson
Counties. 
 Marble from Carbon and Madison Counties and travertine produced in Park
County ' were used mainly for building purposes as dimension stone. Some
crushed and sized material included products for marble whiting, terrazzo,
and roofing granules. The Livingston Marble & Granite Works travertine
quarrying operation at Gardiner and the stone-cutting and slabbing plant
at Livingston, both in Park County, were described.6 
 Sandstone, quartz, and quartzite output for use as industrial silica totaled
185,711 tons, valued at $401,360. The material, produced in Beaverhead, Deer
Lodge, Gallatin, Jefferson, Missoula, and Ravalli Counties, was used for
manufacturing cement and ferrosilicon; for metallurgical purposes as a fluxing
ingredient; and for building purposes as dimension stone, roofing chips,
and terrazzo. Sandstone output of 243,042 tons, valued at $445,126 from Dawson,
Lincoln, and Missoula Counties was used as railroad ballast, and as fill
and riprap at dam and road construction projects. 
by Montana Sulphur & Chemical Co advanced above the 11966 totals. T~o
oil refineries continued to furnish raw material to the recovery plant. Elemental
sulfur was recovered by the firm from oil refinery waste gases supplied by
the Continental Oil Co and Humble Oil & Refining Co operations at Billings.

 
 Talc.—Production of talc increased 30 percent, and value was 38 percent
greater than the 1966 totals, owing to additional milling, screening, and
materials-handling facilities operating at the Barratts mill southeast of
Dillon, Beaverhead County. Talc, mined by two companies, came from one mine
in Beaverhead County and three mines in Madison County, The talc was ground
and sized at plants* in Beaverhead and Gallatin Counties. Some was shipped
for processing to a plant at Grand Island, Nebr. 
 In Beaverhead County, Chas. Pfizer & Co., Inc., Minerals, Pigments,
and Metals Division, mined talc at the Smith-DillonCrown mine on Axes Creek
about ii miles southeast of Dillon and hauled the material to a company processing
mill at Barratts for grinding. Talc from the company Regal-Keystone and Treas.ure
State mines in Madison County also was ground at the Barratts mill. Another
company, United Sierra Division, Cyprus Mines Corp., mined talc at the Yellowstone
mine in Johnny Gulch, 15 miles south of Cameron in Madison County, and after
being hand sorted, the upgraded material was trucked 75 miles to a company
grinding plant at Three Forks, Gallatin County. Some was trucked 45 miles
from the mine to a Northern Pacific Railway siding at Norris, where it was
transshipped to a company processing plant at Grand Island, Nebr. 
 There was considerable change in the quantity of talc consumed by the ceramic
industry. The use distribution of talc by industry (1966 percentages are
*in parentheses) was paper, 31 percent (36 percent); paint, 25 percent (22
percent); ceramics, 20 percent (9 percent); and exports and miscellaneous
uses, including insecticides and rice polishing, 24 percent (33 percent,
including usage for refractories, roofing, textiles, and toilet preparations).

 
6 The Northwest and Its Resources. Montana Brings Roman Stone Age Up to Date
Here. Northern Pacific Railway Co., January—February 1967, pp. 6—8.