Tunnel mining ventilation hoses The most important factor in tunnel and mining applications is to pres or vacuum the required air into the tunnel or mining areas. Because of the nature of the tunnel/mining areas, there are turning points and sloped areas. In these cases, techniconnect hoses have higher performance. At bending or turning points, the vertical and horizontal section does not change because of the spiral and the pressure loss is very lower. The most effective, safety and practical way of suction the air from tunnel/mining is techniconnect hoses. The advantages of the hoses are; Practical, easy installation with connection elements and hanging apparatus Cross section area does not change in turning or bending points Vacuum is possible Long service life Mechanical endurance factor in underground Benefit/cost ratio is higher Lower pressure loss compared with classic air ducts