Abstract The fatigue life and cutting performance of conical pick is essential for the roadheader machine in the excavation engineering. In rock breaking process. the rock structural conditions has a certain influence on the rock breaking and rock damage with roadheader breaking rock. Established the simulation model of conical pick cutting jointed rock to investigate the influence of... https://www.ealisboa.com/best-flash-Nightstick-TWM-850XL-Tactical-Weapon-Mounted-Light-limited-super/