The Caterpillar D9 is a large track-type tractor built by Caterpillar Inc. that functions as a heavy bulldozer, with a detachable blade and a rear ripper attachment for earthmoving work. Caterpillar introduced a prototype, the D9X, in 1954 and began production of the D9 in 1955 at 286 horsepower; current models weigh about 49 short tons and produce 474 horsepower. It is used in construction, demolition, forestry, mining, and quarrying, and has earned wide adoption for its size, durability, reliability, and low operating costs. Since the 1980s the Israel Defense Forces have also fielded armored D9 variants for combat engineering.
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Entity identity for the business product-service.sector GICS enum value this member already carries, per the phase 3 entity-backed browse bucket pilot (docs\design_entity_backed_browse_buckets_20260928.md, owner decision 2026-09-28 on business product-service.sector, w-bucketpilot-gics-0929). The sector fact itself, with its own citation, remains on the member entity unchanged; this edge only adds the durable entity identity the enum value already names.
Sources
1. Wikipedia: Caterpillar D9
WikipediaIntroduction, GICS sector classification
The Caterpillar D9 is a large track-type tractor designed and manufactured by Caterpillar Inc.
Introduction, offering kind classification
The Caterpillar D9 is a large track-type tractor designed and manufactured by Caterpillar Inc.
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