D Data withheld to avoid disclosing figures for individual companies.
1 See definitions below table.

Source: U.S. Census Bureau, through 1992, Current Industry Reports, series MA35D; thereafter,Manufacturing Profiles, series MP, annual; and Internet (released September 2000).

http://www.census.gov/mcd/index.html

*CONSTRUCTION MACHINERY

PURPOSE

To provide detailed data on quantity and total value of shipments of selected construction machinery. The United States Code,Title 13, authorizes this survey and provides for mandatory responses.

COVERAGE

Companies that manufacture selected types of construction machinery in the U.S. (most but not all are in SIC 3531), exceptsmall firms (generally less than 5 employees). In 1993, the value of shipments of selected construction machinery amounted tomore than $8.5 billion.

CONTENT

Data are collected on over 80 different types of construction and off-highway equipment. Product data at the 7-Digit SIC levelinclude quantity of units shipped and value of shipments.

FREQUENCY

Annually; reported data are for activities taking place during the previous calendar year. Data on construction machinery havebeen collected since 1942.

METHODS

A mail-out/mail-back survey of 300 manufacturers. Companies are identified from the latest census of manufactures, theStandard Statistical Establishment List, and private sources. Firms are contacted using form MA35D. Data may be revised iffirms later provide corrected data. Annual figures are compared with data collected from the annual survey of manufactures toreconcile any differences between the two series.*DEFINITIONS USED ABOVE:

Wheel Tractors, Contractors' Off-Highway Type. Wheel tractorsdesigned primarily to be used as towing units for scrapers,trailers, wagons, and similar types of towed equipment for use onnatural terrain. These units may 2- or 4-wheel type.

Loaders. Wheel type, front-end load, integral design, rear enginemount. Complete machines originally conceived and designed asheavy duty, wheel type, front-end loaders, and not as wheeltractors, to receive shovel loading attachments.

Off-Highway Vehicles. Vehicles designed for operation off publichighways to transport materials or equipment on mining,construction, logging, petroleum development, and similar projectsites. (Vehicles which provide similar functions on smoothsurfaces in and around warehouses, depots, and terminals areexcluded from this survey.)

Excavator. A commercial earth-moving machine equipped with abucket-mounted front-end attachment mounted on a 360-degreerevolving superstructure.

Crane. A machine having a front-end lifting attachment andoperating machinery mounted on a revolving superstructure.

Cable-Operated. A machine with front-end attachment functionsperformed by wire rope.

Hydraulic Excavator. An excavator with front-end attachmentfunctions performed hydraulically.

Crawler-Mounted. A machine with two parallel continuous crawlersor tread belts.

Truck-Mounted (Rubber). A machine which generally has two engines,one to propel the carrier and another to power the work functions. A truck- or carrier-mounted machine has two operator stations andis designed for on- and off-highway travel.

Self-Propelled (Rubber). A machine which has only one engine andone operator station. The engine may be mounted in either theupper or lower works.

Net Engine Horsepower (NEHP). Net flywheel performance as measuredby manufacturer, with all standard accessories installed, operated,and corrected to 29.38 inches mercury (Hg) and temperature of 85degrees Fahrenheit.

Hydraulic Crane. A crane with 360-degree rotation on which theboom is designed primarily for lifting the load by wire rope andcan be extended, retracted, raised, and lowered hydraulically.

Pinned-On Telescopic Crane. A hydraulically-powered multipurposerotating crane with fixed or telescoping booms designed to lift andplace materials by winch and load line and which is mounted onto acommercially available vehicle having a platform or body.

Pinned-On Articulated Crane. A stationary or vehicle-mountedhydraulically powered multipurpose knuckle boom crane consisting ofan inner and outer boom that can fold to a stowable position. Excluded are those machines commonly known as knuckle boom loaders.

Unmounted Cranes. These cranes are classified under "Constructionmachinery for mounting".

*