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NZ Contractor magazine

NZ Contractor magazine launched a page in 2016. The print edition of the mag dates back to 1976. We celebrate 50 years in business in 2026.
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NZ Contractor magazine is a monthly magazine published principally as a membership benefit for six industry association groups including Civil Contractors NZ, Aggregate & Quarry, Crane Association of NZ, Heavy Haulage NZ and Ready Mixed Concrete Association. The magazine is available in select retail channels and Koru lounges.

26/06/2026

Archive deep dive back to 2012- check out the Allis-Chalmers HD-20 pictures and article.

To read the article click link in our bio

Caption: An Allis-Chalmers HD-20 fitted with Garwood 241 cable control and Garwood S (straight) bulldozer. Dual aircleaners on the left side of the engine are an instant recognition feature of an HD-20. All the other big Allis bulldozers of the period (HD-15 and HD-19) had them on the right.

25/06/2026

Archive deep dive back to 2012- check out the Allis-Chalmers HD-20 pictures and article.

To read the article click link in our bio

Caption: This preserved Allis-Chalmers HD-20 was spotted at the 2008 Historical Construction Machinery show in the USA. It is fitted with a ‘hard nose’ and Baker hydraulic S blade.

25/06/2026

Sneak preview of our July classic machine profile- on the Clark-Michigan HT110 scraper

Caption: As mentioned in the text, models of any Clark-Michigan motor scrapers are practically non-existent, apart from this little gem, issued in the late 1960s by Italian diecast maker Mercury Toys. To an odd 1:130 scale, as you can see, it is very basic, but has become a collector’s item over time, due to the rarity of any Michigan scrapers. PHOTO: AUTHOR’S COLLECTION.

24/06/2026

Archive deep dive back to 2012- check out the Allis-Chalmers HD-20 pictures and article.

To read the article click link in our bio

Caption: Photographed in 1979 at the Maori Farm opencast coalmine in Huntly, this HD-20 has obviously had a very hard life. It has a scraper push plate and has undergone some modifications to the air induction system as no factory delivered HD-20 ever used an aircleaner set up like this. Sad to say it has almost certainly gone to the scrapper.

24/06/2026

Sneak preview of our July classic machine profile- on the Clark-Michigan HT110 scraper

Caption: A Germany-based Clark-Michigan 110H-T painted in Terex colours, something you don’t see everyday! The machine has the standard ROPS cab and appears to have been very well looked after during its career. PHOTO: INTERNET.

23/06/2026

Archive deep dive back to 2012- check out the Allis-Chalmers HD-20 pictures and article.

To read the article click link in our bio

Caption: Although of marginal quality, this shot shows an HD-20 belonging to FJ Bognuda working on top of Moa Point, Wellington, 1955, during the construction of the airport where a good deal of this hill was removed and used as fill for the main runway. It is towing a LeTourneau K30 ripper.

23/06/2026

Sneak preview of our July classic machine profile- on the Clark-Michigan HT110 scraper

Caption: One of the benefits of owning a twin-powered elevating scraper was that you could load uphill with a good deal of efficiency. This factory portrait also shows the machine’s rear fuel tank to advantage, placed just forward of the rear push block. PHOTO: AUTHOR’S COLLECTION

22/06/2026

Archive deep dive back to 2012- check out the Allis-Chalmers HD-20 pictures and article.

To read the article click link in our bio

Caption: Three HD20s pulling Garwood 624 scrapers excavate a roadbed near Bowling Green, Kentucky, 1953. The lead two units are equipped with a chassis mounted push plate for push loading scrapers. A great many HD20s were delivered with this attachment. The sound of all those GM 6-110s at full throttle must have been fantastic!

21/06/2026

Archive deep dive back to 2012- check out the Allis-Chalmers HD-20 pictures and article.

To read the article click link in our bio

Caption: An HD-20 with chassis mounted push plate gives a helping hand to a LaPlant-Choate TS300 motor scraper. Contractors liked the power and ease of operation of these machines, which was carried over into the HD-21 series.

21/06/2026

CommentContractorNational PoliticsPolicyPoliticsSome of our ministries have been thinking by Contractor MagJanuary 29, 2026January 29, 2026 Share0 Wellington has solved the country’s 50-year ‘productivity’ puzzle, explains Roger Partridge. Republished from Plain Thinking at Substack.com. Accor...

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