AWSR Mine Photo: AWSR Horizon Mine is considered 1 of the most valuable deep mines with high end "valuable" coal. Why is it so valuable? Well another poster on here, Jbaxter12, said it pretty good. ASWR has a special blend coal which contains high energy (BTU Value) and low sulfur content, (cleaner) which adds up to large margin sales. Read my posts and learn the real story behind Horizon Mines. Then read our pumpers hype and cheer for good measure.