Halloysites and the Paris Connection
High-end tableware and technical ceramic applications such as molecular sieves remain the key ceramics market for two halloysite quarries in Northland, but higher-tech applications could...
Category : Quarrying
Environment Canterbury spotlight: river management and consenting
An Environment Canterbury initiative provides a new option for short-term gravel extraction from the region’s rivers. HUGH DE LACY explains. Using gravel extraction as a...
Serpent rock
The serpentine group of minerals found in serpentine rocks is used as a source of magnesium and decorative stone. ALAN TITCHALL takes a closer look...
Quarry deaths draw fire from labour reps
Retraction In the original printed version of this article – Q&M magazine June-July 2015 – it was mistakenly said that, “In February last year worker...
Story of a smaller player
The dairy boom got Southland’s Hillside Quarry up and running, and the current slump may yet slow it down. HUGH DE LACY checks out a...
Looking ahead 150 years
Stevenson Resources has been moving vast quantities of overburden around its Drury Quarry to get at resources that were never expected to be quarried in...
A nifty new plant
Stevensons’ Drury Quarry is one of the largest and most technically advanced in the country and amongst the biggest producers of aggregate in the...
Hard rock, tricky blasting
A new blasting strategy at its Bombay quarry south of Auckland is paying substantial dividends for quarry operator Holcim. Hugh De Lacy explains. Cutting blasting costs by...
Hand-made in Wine Country
HUGH DE LACY traces the development of a South Island schist business from the humblest of all quarrying beginnings – breaking rocks by hand. A...
Pugmill Rules
ALAN TITCHALL catches up with one of the busiest quarries in the Waikato region and finds out why the pugmill could become a more a...