There are extensive manufactures, including those of motors and cycles with their accessories, also papermills, breweries, &c., and the population is largely industrial.
Electric motors for barrel cranes are not essentially different from those used for other purposes, but in proportioning the sizes the intermittent output has to be taken into consideration.
Three-phase motors are also much used for FIG.
Crane-driving, and it is probable that improvements in single and two-phase motors will eventually largely increase their use for this class of work.
The weight required to cause the downward motion is obtained either by means of the material which has to be transported to the bottom of the hill or by water ballast, while to aid and regulate the motion generally steam or electric motors are arranged to act on the main drums, round which the cable is passed with a sufficient number of turns to prevent slipping.