This film shows a heavy tractor-bulldozer Caterpillar D 9 N, which participates in field testing of a new glazing for its cab.
A Caterpillar D11N tractor can also be seen in the film.
Author's text. Used for illustration:
Credit
VIDEO: Hidden Danger: Safety Improvements for Surge Piles. License: Public Domain. • Hidden Danger: Safety ...
Негізгі бет Автокөліктер мен көлік құралдары Caterpillar D9N bulldozer with glazing like an F-111 bomber. History of Industrial tractors series.
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