Johnston Morehouse Dickey Company (JMD) was established in 1902 and remains an industry leader in the manufacture of mine, shaft, and tunnel ventilation and safety products. JMD Company offers a complete line of Check Panels, Curtains, Blower Tubing and Abrasion Guarding. We manufacture over twenty grades of synthetic brattice materials in our Nylotex, Airtex, Superweave, and Cleartex-R constructions. All of our ventilation products are MSHA approved for underground use. JMD products are stocked by a national distribution network that is committed to fast, reliable service. JMD Company's management team has over 110 years of combined experience to assist you with questions concerning product selection, specification, and installation.