Winstone Aggregates uses the latest technology crushers to produce a product that is an angular in shape with hard corners and comparatively equal dimensions. This enables the particles to sufficiently interlock inhibiting track movement and providing appropriate sleeper load distribution.
Track ballast is stored in certified stockpiles and is handled in conditions that prevent material contamination, segregation and degradation. Our IANZ accredited laboratories test ballast production properties meet New Zealand ballast specification every 1000m3. Test reports are distributed to customers at agreed intervals to assist with certification requirements.
Track ballast produced by Winstone Aggregates conforms to the new Ballast Track Specification 140.
Winstone Aggregates supplies Ballast to KiwiRail: view Dart 1 project