Table 3.—Work stoppages in certain mineral industries in the United
States 
 
Work stoppages 
 
Work stoppages 
 
 
Man- 
 
Man 
Industry and year Num- her 
days Industry lost(thou-sands) 
and year Num-  her 
days 
lost 
(thou 
sands) 
1 
 
2 
 
1 
 
3 
1 
3 
 
1 
14 
7 
5 
15 
 1 29.6 
 1 (1) 
 1 (1) 
 1 1.0 
 7 3.0 
 11 170.0 
 8 51.6 
 15 182.0 
 12 1,420.0 
 1 (1) 
 1  2.2 
 3 ~ 
 1 (1) 
 5 3.8 
 8 24.7 
 9 38.0 
 7 9.2 
 1 9.0 
 2 (1) 
 2 (1) 
 10 3.5 
 7 1.9 
 215 26.8 
 1 2886 
 4 12.5 
 1 (1) 
 2 (1) 
 10 38.9 
 1 (1) 
 1 7.4 
 14 32.3 
 2 1.7 
 9 67.4 
' Less than 100 man-days. 
 
2 Includes idleness from stoppages which began in the previous year. Source:
U.S. Department of Labor, Bureau of Labor Stat,stics. 
52 
MINERALS YEARBOOK, 1967 
 
 
 
 
 
 
Coal mining: 
Anthracite: 
1963 
1964 
1965 
1966 
1967 
Bituminous and lignite: 
1963 
1964 
1965 
1966 
1967 
Crude petroleum and 
natural gas: 
1963 
1964 
1965 
1966 
1967 
Oil and gas field services: 
1963 
1964 
1965 
1966 
1967 
Petroleum refining: 
1963 
1964 
1965 
1966 
1967 
Metal mining: 
Iron: 
1963 
1964 
1965 
1966 
1967 
Copper: 
1963 
1964 
1965 
1966 
1967 
Lead-zinc: 
1963 
1964 
1965 
1966 
1967 
Gold-silver: 
1963 
1964 
1965 
1966 
1967 
   Metal mining—Continued 
   Ferroalloy metal ores: 
 4 3.0 1963 
 5 (1) 1964___________________ 
 3 1.7 1965 
 4 8.3 1966 
 3 1.4 1967 
   Miscellaneous metal ores: 
 131 2234.0 1963___________________ 
 111 340.0 1964 
 145 258.0 1965                    
 160 629.0 1966 
 207 2 158.0 1967 
   Primary smelting and refining of 
   nonferrous metals: 
   1963 
   1964 
   1965 
 50.7 1966                                
  (1) 1967 
   Mining and quarrying of non- 
  2.5 metallic minerals (except fuels): 
   Dimension stone: 
  (1) 1963 
  2.6 1964 
  (1) 1965 
   1966 
  2314.0 1967 
  162.0 Crushed and broken stone: 
  231.4 1963 
  5.6 1964 
  103.0 1965 
   1966 
   1967 
 1 22.4 Sand and gravel: 
 3 5.5 1963 
 3 21.9 1964 
   1965 
   1966 
   1967 
 5 27.6 Chemical and fertilizer 
 11 385.0 mineral mining: 
 3 60.5 1963 
 6 25.2 1964 
 7 2,660.0 1965 
   1966 
  2917 1967 
 9 14.9 Cement, hydraulic: 
 6 43.3 1963 
 4 266.0 1964 
 3 2934 1965______________________ 
   1966  - 
 1 16.0 1967                          
  2216 
 2 26.9 
 
 
 
 The following operations won the 1967 awards in the bank or pit and dredge
groups: 
 Bank or Pit.—Lockport plant, Material Service Division, General Dynamics
Corp., Lockport, Ill. 
 Dredge—Dover plant, T. L. Herbert 
 
and Sons, Linden, Tenn. 
 Three other competitions cosponsored by the National Lime Association, the
National Limestone Institute, and the National Slag Association, were conducted
during 1967. A total of 240 plants was entered in these contests.