Abstract: A snow plow including an automotive car body equipped with an engine, a transmission and a clutch means; an operation-frame attached to the rear upper portion of said car body; a clutch operation means attached to said operation frame, said clutch operation means being designed to operate for disengaging said clutch means; and a snow plow apparatus mounted on the car body, wherein said operation frame is provided with an upper guard frame having a substantially same width as the car body with freedom of oscillation; the car body is provided, under said upper guard frame, with a lower guard frame having a substantially same width as the car body with freedom of oscillation; said both guard frames are connected by means of a first connecting means; and any one of both guard frames is connected with the clutch operation means by means of a second connecting means so that when an impact is applied on either guard frame the clutch operation means is designed to operate for disengaging the clutch means.

Abstract: Fluoroalkanols of the formula:H(CF.sub.2 CF.sub.2).sub.n CH.sub.2 OH (I)are prepared by telomerization of tetrafluoroethylene with methanol in a batch system. The reaction is carried out while introducing tetrafluoroethylene continuously into the reaction system. The production of fluoroalkanols of the formula (I) wherein n is an integer of 5 or more is suppressed and the production of fluoroalkanols of the formula (I) wherein n is an integer of 4 or less is enhanced.