Scaling rock slide near The Dragon on U.S .Rout 129 Erik Schelzig 1:07 14 years ago 13 551 Скачать Далее
Rock-Scaling Crews Protect Mountain Routes - Caltrans News Flash #231 CaltransVideo 2:12 3 years ago 13 663 Скачать Далее
Rock scaling is generally defined as the removal of loose rock from a slope using hand tools... Dunyakolik Media Knowledge-Motivation 0:31 2 years ago 1 093 Скачать Далее