40 
MINERALS YEARBOOK, 1967 
 
gas industries the injury-severity rate was lowered, but an increased number
of injuries resulted in a less favorable frequency rate. The sand and gravel
and the primary nonferrous smelting industries were improved in the number
of injuries and the frequency rate, but the severity rate was higher than
in 1966. In the nonmetal industry the severity rate and the number of injuries
were slightly lower, but the frequency rate was less favorable. Although
the severity rate was lowered in the native asphalt industry in 1967, the
number of injuries and the frequency rate increased. All general measures
of injury experience in the coke, peat, and slag industries worsened in 1967.

 There were fewer fatal work injuries in 1967 in the coal, oil and gas, metal,
stone, and sand and gravel industries. The primary nonferrous smelting industry
had the 
same number as ' in 1966. There were no fatalities reported at operations
in the peat and native asphalt industries. The number of work fatalities
during 1967 was higher than in 1966 only in the nonmetal, coke, and blast-furnace-slag
industries. 
 The numbers of nonfatal work disabilities in 1967 were reduced in the coal,
metal, nonmetal, stone, sand and gravel, and primary nonferrous smelting
industries. In all other mineral industry groups, nonfatal injuries increased
over those of 1966. 
 
 Worktime.—The decline in operating activity in 1967, as indicated
by man-hours worked, was widespread. Activity was higher only in the coal,
native asphalt, and blast-furnace-slag industries. Total worktime of 1,864
million man-hours in all mineral industries during 1967 declined 3 percent
from 1966 totals. 
 
 
STATE DATA 
 
 State data are presented for the mineralextractive and processing industries,
however no breakdown is presented for the purely processing industries, coke,
primary nonferrous smelting, and blast—furnace-slag, nor for petroleum
and natural: g~, although totals for these industries are included in the
summarization at the end of the State table (table 1). A corresponding chapter
in Volume I-TI of the Minerals Yearbook contains detailed breakdowns of similar
information on the specific mineral industries comprising the general groupings
used in this chapter. 
 The mineral industries of West Virginia and Kentucky, in each of which underground
coal mining was dominant, had higher injury-frequency rates than any other
State. The rates of occurrence of injuries in 1967 for West Virginia operations
were 54.60 and in Kentucky 43.50 per million man-hours; comparable rates
for 1966 were 55.81 and 43.38, respectively. The mineral industries in Idaho,
where metal mining and milling predominate, ranked third highest in injury
frequency with a rate of 42.00 in 1967. 
 Mines and processing plants in West Virginia had the largest number of work
fatalities (63) during 1967, sharply reduced from the 82 fatalities reported
in 1966. States ranking next in number of mineral industry fatalities during
1967 
were Kentucky (54), Pennsylvania (48), Virginia (32), and Illinois (23).
States ranked by number of nonfatal injuries in mines and processing plants
during 1967 were West Virginia (4,313), Pennsv~vania (1,994), Kentucky (1,807),
Virginia (1,259), and Illinois (1,005). Coal mining is the dominant mineral
industry in each of the five States with the highest numbers of fatal and
nonfatal injuries. 
 The injury-severity rate for the mineral industries of Kentucky (9,918)
was higher than that in any other State. The next highest injury-severity
rates were for the mines and mineral plants in Idaho (8,432) and Virginia
(7,461). 
 Of the States with major mineral industry activity (more than 10 million
manhours of worktime) in 1967, mines and plants had the lowest injury-frequency
rates in Minnesota (6.97), Alabama (12. 93), and Florida (1308). Similariy,
the mineral industries in New York ($86), Arkansas (967), and Georgia (1,173)
had the most favorable injury-severity rates 
 The magnitude of mining and milling activity in the ranking States, as measured
by worktime in thousands of man-hours, was as follows: Pennsylvania (82,439);
West Virginia (80,149); Kentucky (42,~ 784); Ohio (37,308); and California
(35,- 
112). States with the largest number of