INSTALLATIONS AND EQUIPMENTS Self-Powered Support System Self-powered support system for ceiling barring. Diagram of pumping station for feeding a self-powered support system. Self-powered support system with slider frame and prop (logs) for a unit nominal load of 400 kN.     Diagram of hydraulic log. Hydraulic logs .     Self-powered support system with frame and prop (logs) for a unit nominal load of 400 KN. Zona Industrial s/n Apartado 38 E-33630 Pola de Lena. Asturias ESPAÑA Telf.: +34 985 491 368 - +34 985 491 707 Fax: +34 985 492 161 email: emeinsa@emeinsa.com