www.keystonemetalbuilding.com Keystone Steel Structures provides steel building services to Lancaster, Pa and the surrounding areas including PA, MD, DE, and NJ. We supply, erect, and provide general construction services with a specialty in pre-engineered structures. This is a new indoor baseball training center in Thorndale, Pa. Call us at 484-722-8274 for a free estimate on your new metal building project today! http://www.keystonemetalbuilding.com/single-post/2017/01/20/Steel-Building-in-Thorndale-Pa-Under-Way