Description of Industries and Summary of Findings

INDUSTRY 1422, CRUSHED AND BROKEN LIMESTONE

This industry is made up of establishments primarily engaged in mining or
quarrying crushed and broken limestone, including related rocks, such as
dolomite, cement rock, marl, travertine, and calcareous tufa.  Also
included are establishments primarily engaged in the grinding or
pulverizing of limestone, but establishments primarily engaged in producing
lime are classified in manufacturing, industry 3274.

In the 1992 Census of Mineral Industries, Industry 1422, Crushed and Broken
Limestone, had employment of 27.7 thousand. The employment figure was 4
percent below the 28.9 thousand reported in 1987. The total value of
shipments and receipts for the industry was $3.2 billion in 1992. The value
added by mining was $2.3 billion in 1992. Value added per employee was
$81.9 thousand in 1992; it was $72.4 thousand in 1987.

The total cost of supplies used by establishments classified in this
industry amounted to $1.2 billion, while the cost of selected supplies,
minerals received for preparation, and purchased machinery installed
amounted to $723.3 million and is shown in file NC92F7. The total cost of
fuels used in this industry amounted to $146.3 million in 1992. Data on
specific fuels used also appear in file NC92F7.

Single-establishment companies in this industry with up to 11 employees
were excluded from the mail portion of the census. The data for these
establishments (and a small number of larger establishments whose reports
were not received at the time the data were tabulated) were imputed as
described above. These establishments accounted for 11 percent of the total
value of shipments and receipts. Single establishment companies with 12 to
20 employees were mailed a short census form requesting summary data on
employment, payroll, costs, capital expenditures, and products.


INDUSTRY 1423, CRUSHED AND BROKEN GRANITE

This industry is made up of establishments primarily engaged in mining or
quarrying crushed and broken granite, including related rocks, such as
gneiss, syenite, and diorite.

In the 1992 Census of Mineral Industries, Industry 1423, Crushed and Broken
Granite, had employment of 6.1 thousand. The employment figure was 6
percent below the 6.5 thousand reported in 1987. The total value of
shipments and receipts for the industry was $895.3 million in 1992.  The
value added by mining was $659.6 million in 1992. Value added per employee
was $108.1 thousand in 1992; it was $107.1 thousand in 1987.

The total cost of supplies used by establishments classified in this
industry amounted to $305.3 million, while the cost of selected supplies,
minerals received for preparation, and purchased machinery installed
amounted to $211.6 million and is shown in file NC92F7. The total cost of
fuels used in this industry amounted to $25.5 million in 1992. Data on
specific fuels used also appear in file NC92F7.

Single-establishment companies in this industry with up to 16 employees
were excluded from the mail portion of the census. The data for these
establishments (and a small number of larger establishments whose reports
were not received at the time the data were tabulated) were imputed as
described above. These establishments accounted for 11 percent of the total
value of shipments and receipts.


INDUSTRY 1429, CRUSHED AND BROKEN STONE, N.E.C.

This industry is made up of establishments primarily engaged in mining or
quarrying crushed and broken stone, not elsewhere classified, such as slate
(including slate granules), marble, trap rock (basalt, diabase, and related
rocks), sandstone (including quartzite and ganister), and various high
lighted color volcanic rocks, mica schist, and mixed boulders.

In the 1992 Census of Mineral Industries, Industry 1429, Crushed and Broken
Stone, N.E.C., had employment of 7.8 thousand. The employment figure was 6
percent below the 8.3 thousand reported in 1987. The total value of
shipments and receipts for the industry was $928.3 million in 1992. The
value added by mining was $691.0 million in 1992. Value added per employee
was $88.6 thousand in 1992; it was $81.7 thousand in 1987.

The total cost of supplies used by establishments classified in this
industry amounted to $336.8 million, while the cost of selected supplies,
minerals received for preparation, and purchased machinery installed
amounted to $234.4 million and is shown in file NC92F7. The total cost of
fuels used in this industry amounted to $35.9 million in 1992. Data on
specific fuels used also appear in file NC92F7.

Single-establishment companies in this industry with up to 6 employees were
excluded from the mail portion of the census. The data for these
establishments (and a small number of larger establishments whose reports
were not received at the time the data were tabulated) were imputed as
described above. These establishments accounted for 12 percent of the total
value of shipments and receipts.  Single-establishment companies with 7 to
20 employees were mailed a short census form requesting summary data on
employment, payroll, costs, capital expenditures, and products.