Rockhill Quarry asbestos concerns continue, · When a quarry north of the Pennridge Airport sprang to life in December 2018, alarm bells rang with local residents. Nearly two years later, they and East Rockhill Township are still fighting the ...P&Q University Lesson 8, · Scalping screening plants are built to handle the toughest materials but are not as precise as standard screening plants. Material is fed directly onto the screen. Scalpers are ideal for sorting materials before crushing, processing scrap metals and recyclables, and to extract rock from dirt on construction sites.Control Hidden Locations guide, · From the Quarry Entrance Control Point, head into the quarry, hugging the left wall. Look for an entrance on the wall that leads to a hallway with a forklift resting against a wall of blocks.Cemex reaches milestone in Fresno County mining plans, · The quarry and plant are used to produce aggregate, which is a key component in construction materials such as concrete and asphalt. The facilities have been producing aggregate since 1913. Cemex, a Mexican multinational building materials company, has operated them since 2005.Fight Against Vulcan Goes On, · Published in December 26 New Braunfels Herald-Zeitung (subscription required)As 2019 draws to a close, Preserve Our Hill Country Environment and Stop 3009 Vulcan Quarry are so grateful to all our supporters and volunteers in the ongoing battle against the huge, 1500-acre quarry planned by Vulcan Construction Materials between New Braunfels and Bulverde..