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32. 1997 Economic Census
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
* CONSTRUCTION MACHINERY
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.
Companies that manufacture selected types of construction machinery in the U.S. (most but not all are in SIC 3531), except small firms (generally less than 5 employees). In 1993, the value of shipments of selected construction machinery amounted to more than $8.5 billion.
Data are collected on over 80 different types of construction and off-highway equipment. Product data at the 7-Digit SIC level include quantity of units shipped and value of shipments.
Annually; reported data are for activities taking place during the previous calendar year. Data on construction machinery have been collected since 1942.
A mail-out/mail-back survey of 300 manufacturers. Companies are identified from the latest census of manufactures, the Standard Statistical Establishment List, and private sources. Firms are contacted using form MA35D. Data may be revised if firms later provide corrected data. Annual figures are compared with data collected from the annual survey of manufactures to reconcile any differences between the two series. * DEFINITIONS USED ABOVE:
Wheel Tractors, Contractors' Off-Highway Type. Wheel tractors designed primarily to be used as towing units for scrapers, trailers, wagons, and similar types of towed equipment for use on natural terrain. These units may 2- or 4-wheel type.
Loaders. Wheel type, front-end load, integral design, rear engine mount. Complete machines originally conceived and designed as heavy duty, wheel type, front-end loaders, and not as wheel tractors, to receive shovel loading attachments.
Off-Highway Vehicles. Vehicles designed for operation off public highways to transport materials or equipment on mining, construction, logging, petroleum development, and similar project sites. (Vehicles which provide similar functions on smooth surfaces in and around warehouses, depots, and terminals are excluded from this survey.)
Excavator. A commercial earth-moving machine equipped with a bucket-mounted front-end attachment mounted on a 360-degree revolving superstructure.
Crane. A machine having a front-end lifting attachment and operating machinery mounted on a revolving superstructure.
Cable-Operated. A machine with front-end attachment functions performed by wire rope.
Hydraulic Excavator. An excavator with front-end attachment functions performed hydraulically.
Crawler-Mounted. A machine with two parallel continuous crawlers or 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 and is designed for on- and off-highway travel.
Self-Propelled (Rubber). A machine which has only one engine and one operator station. The engine may be mounted in either the upper or lower works.
Net Engine Horsepower (NEHP). Net flywheel performance as measured by manufacturer, with all standard accessories installed, operated, and corrected to 29.38 inches mercury (Hg) and temperature of 85 degrees Fahrenheit.
Hydraulic Crane. A crane with 360-degree rotation on which the boom is designed primarily for lifting the load by wire rope and can be extended, retracted, raised, and lowered hydraulically.
Pinned-On Telescopic Crane. A hydraulically-powered multipurpose rotating crane with fixed or telescoping booms designed to lift and place materials by winch and load line and which is mounted onto a commercially available vehicle having a platform or body.
Pinned-On Articulated Crane. A stationary or vehicle-mounted hydraulically powered multipurpose knuckle boom crane consisting of an 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 "Construction machinery for mounting".
These tables are based on figures supplied by the United States Census Bureau, U.S. Department of Commerce and are subject to revision by the Census Bureau.
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