Goulty (1989) and Planning Overhead Power Line Routes by RJB Carruthers (1987) Research Studies Press Ltd, Letchworth.The Holford Rules are:Avoid altogether, if possible, the major areas of high amenity value, by so planning the general route of the line in the first place, even if the total mileage is somewhat increased in consequence.Avoid smaller areas of high amenity value or scientific interest, by deviation; provided that this can be done without using too many...