Disclosed are technical fibers and yams made with partially aromatic polyamides and a fiber having vapor phase action such as an FR cellulosic fiber. The base is formed of a seat and a plurality of rod members. The first silo and the second silo each comprise a foundation comprising a base supported by a plurality of micropile units. The apparatus further includes a second fluid circuit in fluid communication with the hot side, means for introducing a second fluid within the second fluid circuit and integral thereto, a pump integral to the second fluid circuit and adapted to transmit a second fluid within the second fluid circuit and means for controlling a rate of flow of the second fluid within the second fluid circuit. In such circumstances, the fasteners can be transferred from the first ramp surface to the second ramp surface of the firing member.