1992 Census of Mineral Industries
                           Geographic Area Series

                                  Abstract


=>CITATION

Census of Mineral Industries on CD-ROM, 1992:  Geographic Area Series /
prepared by the Bureau of the Census.  Washington: The Bureau [producer and
distributor], 1996.

=>TYPE OF FILE

Summary statistics

=>UNIVERSE DESCRIPTION

The universe of these files is establishments primarily engaged in
mining.  This universe includes all establishments classified in the mining
Standard Industrial Classification (SIC) codes 1011 through 1499.  Both
operating establishments and auxiliary establishments are included in all
files.

=>SUBJECT-MATTER DESCRIPTION

These data are exactly the same as shown in tables 1 through 5 of the
printed Geographic Area Series reports, with the exception of table 2b
which is not shown.  In addition, for 1992, data from table 6 are presented
in these files; for 1987, these data were not presented.

=>GEOGRAPHIC COVERAGE

Data are provided by industry level for the following geographic areas
based upon their employment size:

  - Data by Total for All Minerals Industries by State for all employment
    levels

  - Data by 2-, 3-, and 4-digit Standard Industrial Classification (SIC)
    Code for states with 100 or more mining employees.

  - Data by 2- and 3-digit SIC Code by Type of Operation for states for all
    employment levels.

  - Data by 2- and 3-digit SIC Code by state and county for all employment
    levels.

  - Data by 2-digit SIC Code by state, county, and employment size for all
    employment levels.

=>SOFTWARE ACCESS

In addition to the EXTRACT software, which access all of these data, the
GO92 software provide more "user-friendly" displays of selected statistics
from these files.  These include the Number of Establishments, Total Number
of Employees, and Total Value of Shipments.  GO92 allows the user to select
the geographic area, and shows the data by SIC code.

=>RELEASE SCHEDULE

The data from the Geographic Area Series publications for Mining are
released on a flow basis by groups of states (divisions), to be included on
CD-ROMs 1f through 1j.  For a complete listing of which states are included
on this disc, see WHAT'S NEW on the Doccumentation System Main Menu.

=>RELATED DATA FILES

Census of Mineral Industries, 1992:  Industry Series.  Provides more
detailed statistics about minerals industries at the national level.
Statistics on products produced by state are also included.

Census of Mineral Industries, 1987 and 1982: Geographic Area Series.
Format is generally the same as for 1992 data presented in file NC92A1;
data from the other files was not included on the 1987 CD-ROM.

=>FILE CHARACTERISTICS

File Structure:  dBASE III+

The file also has several dBASE ".NDX" index files and one or more label
files that can be linked to them (e.g., with SIC titles).

=>- NC92A1  General Statistics for States and Counties
1.  File sequence:
    State records, followed by records for each county.  States are
    sequenced alphabetically, with counties appearing in alphabetic
    sequence within each state.  Within each geographic area, SIC's appear
    in numeric sequence, and for data at the All Minerals Industries Total
    level, data for 1992, 1987, 1982, and 1977 appear in descending
    sequence.
2.  Available indexes:
    a.  NC92A1GS:  By geotype, state, place (00000), county, and SIC
    b.  NC92A1CO:  By unique state and county
    c.  NC92A1KS:  By SIC, geotype, state, place (00000), and county
3.  Linkable label files:
    a.  SICKEY92:  SIC titles
    b.  GEOREF92:  Full titles for states and counties
    c.  EC92MISC:  Descriptions for data flags and types of geographies


=>- NC92A3  Selected Statistics by Type of Operation for States
1.  File sequence:
    State records, sequenced alphabetically.  Within each geographic area,
    data for SICs appear in ascending sequence, with Types of Operation
    listed hierarchically within each SIC.
2.  Available indexes:
    a.  NC92A3A:  By SIC, type of operation, and state
    b.  NC92A3B:  By type of operation, SIC, and state
3.  Linkable label files:
    a.  GEOREF92:  Full titles for states
    b.  EC92MISC:  Descriptions for data flags (including type of
                   operation), and types of geographies


=>- NC92A4  Summary Statistics for States

1.  File sequence:
    State records, sequenced alphabetically.
2.  Available indexes:
    a.  NC92A4A:  By state
3.  Linkable label files:
    a.  GEOREF92:  Full titles for states
    b.  EC92MISC:  Descriptions for data flags and types of geographies


=>- NC92A6  Establishment Statistics for States and Counties

1.  File sequence:
    State records, followed by records for each county.  States are
    sequenced alphabetically, and counties appear in alphabetic sequence
    within state.  Within each geographic area, SIC's appear in numeric
    sequence.
2.  Available indexes:
    a.  NC92A6A:  By SIC, state, and county
    b.  NC92A6B:  By state, county, and SIC
3.  Linkable label files:
    a.  SICKEY92:  SIC titles
    b.  GEOREF92:  Full titles for states and counties
    c.  EC92MISC:  Descriptions for data flags and types of geographies