Track ballast: A train passes over it
This article first appeared in Q&M‘s April-May issue. PETER OWENS looks at Southern Aggregates’ hard rock quarry at Greenhills near Bluff, which produces new Ballast...
Tag : Southern Aggregates
Spare rocks make great walls
This article first appeared in Q&M‘s December-January issue. Not all quarry stones are crushed into aggregates and there has been a trend in recent years...