Drainage Chip

Graymont New Zealand sites manufacture drainage chip at quarry sites in the North and South Island. These materials are available in various sizes including:

  • Makaraeo: 5-12mm
  • Oparure: 15-25mm, 25-50mm.

Did you know?

There are three distinct types of limestone, defined by their magnesium carbonate (MgCO3) concentrations. These types are Dolomitic (35 to 46% MgCO3), Magnesian (5 to 35% MgCO3) and High calcium (less than 5% MgCO3).