Tractor Mounted Jaw Crusher For Reducing Rock (gear
The first crushing reduces the rock to a maximum size of about 6 inches. The rock then goes to secondary crushers or hammer mills for reduction to about 3 inches or smaller. The crushed rock is combined with other ingredients such as iron ore or fly ash and ground, mixed, and fed to a cement kiln.Aug 10, 2020 Brick and block masons earned a mean $25.53 per hour, or $53,150 per year as of May 2019, according to the U.S. Bureau of Labor Statistics.However, the lowest-paid 10 percent brick and block masonry salary was under $15.86 per hour, or $32.980 per year. The highest-earning 10 percent brick mason salary is a mean $42 per hour, or $87,360 per year, the BLS states.