The area -- about 500 yards long and 150 yards wide -- contains mangroves, scrub brush and drainage ditches.

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Scrub wheels and tires using a stiff bristle brush, and a proprietary wheel-cleaning product if necessary, to remove dirt, grease and disc-brake powder.

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He pilots the Caterpillar (nyse: CAT - news - people ), ancient, ugly and creaky, to clear acres of thorny thicket and scrub brush.

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