1. Riordan Materials Corp
782 Longthorn Ct, Millersville, MD 21108
Coordinate: 39.10711,-76.61065
Phone: (301) 858-0609
2. B & B Industrial Supplies
112 Fordham Dr, Millersville, MD 21108
Coordinate: 39.10967,-76.5811
Phone: (410) 384-9414