Last year's flooding in the Australian state of New South Wales left the roads in the Richmond Valley in a poor state with 400km in need of urgent repair. To quickly meet the aggregate demand for the work, Richmond Valley Council called on contract crushing specialist M&M Crushing to produce 100,000tonnes of 20mm road base and 7mm, 10mm and 14mm graded aggregates from Peterson's Quarry.
Last year's flooding in the Australian state of New South Wales left the roads in the Richmond Valley in a poor state with 400km in need of urgent repair. To quickly meet the aggregate demand for the work, Richmond Valley Council called on contract crushing specialist M&M Crushing to produce 100,000tonnes of 20mm road base and 7mm, 10mm and 14mm graded aggregates from Peterson's Quarry.
M&M used its fleet of mobile Extec crushing and screening equipment to process the hard basalt at the quarry. M&M director Jason MacDonald said, "Basalt is a difficult rock to crush consistently and the Extec equipment allowed us to comply with the council's specific road base and aggregate specifications with minimal downtime."
M&M used a C12+ jaw crusher to take the 600mm blasted basalt feedstock to 150mm down before it was fed onto an E-7 horizontal screen to scalp off the 20mm road base material. An Extec X44 SBS cone crusher was used for secondary crushing to produce the 150 to 14mm material.
According to MacDonald, the X44 was selected for the job because it consistently produced a well shaped cubical aggregate and this was a major factor that helped the company with the council contract. After processing with the X44, material was passed over an S-5 screen to separate the 10mm, 7mm and 0-5mm material.
M&M used its fleet of mobile Extec crushing and screening equipment to process the hard basalt at the quarry. M&M director Jason MacDonald said, "Basalt is a difficult rock to crush consistently and the Extec equipment allowed us to comply with the council's specific road base and aggregate specifications with minimal downtime."
M&M used a C12+ jaw crusher to take the 600mm blasted basalt feedstock to 150mm down before it was fed onto an E-7 horizontal screen to scalp off the 20mm road base material. An Extec X44 SBS cone crusher was used for secondary crushing to produce the 150 to 14mm material.
According to MacDonald, the X44 was selected for the job because it consistently produced a well shaped cubical aggregate and this was a major factor that helped the company with the council contract. After processing with the X44, material was passed over an S-5 screen to separate the 10mm, 7mm and 0-5mm material.
