Description of Industries and Summary of Findings INDUSTRY 2451, MOBILE HOMES This industry is made up of establishments primarily engaged in the manufacture of mobile homes and nonresidential mobile buildings. These units are generally more than 35 feet long, at least 8 feet wide, do not have facilities for storage of water or waste, and are equipped with wheels. Establishments primarily engaged in the manufacture of trailers that are generally 35 feet long or less, 8 feet wide or less, and with self-contained facilities are classified in industry 3792. Establishments primarily engaged in the manufacture of portable wood buildings not equipped with wheels are classified in industry 2452. The 1992 definition of this industry is the same as that used in the 1987 Standard Industrial Classification (SIC) system. The SIC number and title also are the same. In the 1992 Census of Manufactures, Industry 2451, Mobile Homes, had employment of 37.0 thousand. The employment figure was 7 percent below the 39.9 thousand reported in 1987. The leading States in employment in 1992 were Indiana, Alabama, Georgia, and North Carolina, accounting for approximately 43 percent of the industry's employment. This represents a shift from 1987 when Georgia, Indiana, North Carolina, and Florida accounted for approximately 45 percent of the industry's employment. The total value of shipments for establishments classified in this industry was $4.5 billion. Establishments in virtually all industries ship secondary products as well as products primary to the industry in which they are classified and have some miscellaneous receipts, such as resales and contract receipts. The products primary to industry 2451, no matter in what industry they were produced, appear in file MC92F6A.dbf and aggregate to $4.5 billion. For an explanation of specialization and coverage ratios, see file MC92F5b.dbf. The total cost of materials, services, and fuels and energy used by establishments classified in the mobile homes industry amounted to $2.9 billion. Data on specific materials consumed appear in file MC92F7.dbf. Single-establishment companies in this industry with less than 5 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 obtained from administrative records of other agencies or developed from industry averages. These establishments accounted for 9 percent of the total value of shipments. INDUSTRY 2452, PREFABRICATED WOOD BUILDINGS This industry is made up of establishments primarily engaged in the manufacture of prefabricated wood buildings, sections, and panels. Establishments primarily engaged in the fabrication of buildings on the site of construction are classified in Division C, Construction. Establishments primarily engaged in the manufacture of fabricated structural wood products are classified in industry 2439. The 1992 definition of this industry is the same as that used in the 1987 Standard Industrial Classification (SIC) system. The SIC number and title also are the same. In the 1992 Census of Manufactures, Industry 2452, Prefabricated Wood Buildings, had employment of 19.0 thousand. The employment figure was 25 percent below the 25.4 thousand reported in 1987. The leading States in employment in 1992 were Pennsylvania, Wisconsin, Virginia, and Indiana, accounting for approximately 37 percent of the industry's employment. This represents a shift from 1987 when Pennsylvania, Virginia, Florida, and Wisconsin accounted for approximately 34 percent of the industry's employment. The total value of shipments for establishments classified in this industry was $2.1 billion. Establishments in virtually all industries ship secondary products as well as products primary to the industry in which they are classified and have some miscellaneous receipts, such as resales and contract receipts. Industry 2452 shipped $2.0 billion of prefabricated wood buildings considered primary to the industry, $35.2 million of secondary products, and had $62.4 million of miscellaneous receipts, resales, and contract work. Thus, the ratio of primary products to the total of both secondary and primary products shipped by establishments in this industry was 98 percent (specialization ratio). In 1987, the specialization ratio was 95 percent. Establishments in this industry also accounted for 95 percent of products considered primary to the industry no matter where they were actually produced (coverage ratio). In 1987, the coverage ratio was 98 percent. The products primary to industry 2452, no matter in what industry they were produced, appear in file MC92F6A.dbf and aggregate to $2.1 billion. For further explanation of specialization and coverage ratios, see file MC92F5b.dbf. The total cost of materials, services, and fuels and energy used by establishments classified in the prefabricated wood buildings industry amounted to $1.2 billion. Data on specific materials consumed appear in file MC92F7.dbf. Single-establishment companies in this industry with less than 5 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 obtained from administrative records of other agencies or developed from industry averages. These establishments accounted for 17 percent of the total value of shipments.