The EPA has also identified 15 abandoned hardrock mines, located mostly in the West, where it has rated wind - energy potential to be excellent, outstanding or superb, said Shahid Mahmud, co-chairman of the federal agency's national mining team. (scientificamerican.com)
«Rock climbing is a two person sport in a way as you take it in turns to belay, which is the safety work at the base of the climbs that we teach to all new people who come into our complexes,» says manager and instructor at Hardrock Climbing Aaron Floyed. (womenshealthandfitness.com.au)
It's built around four plys of sustainably sourced Canadian Hardrock Maple, sandwiched between two layers of procured fiberglass (this is essentially what makes it long - lasting and flexible). (treehugger.com)