Electric pylons are tall supports – made of galvanised steel lattice, steel tube or wood – used for power line construction. In normal terrain, they are assembled on the site. In mountainous regions, helicopters are used for power line construction, which are efficient but expensive. In the aerial construction method, the entire structure is pre-assembled and shifted in helicopters.
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International Nurses Day Information, History, Theme and Photos
International Nurses Day is observed world wide in order to commemorate the valuable contribution of …