when will silver line to dulles be finished
Silver Line (Washington Metro) Service on Phase I of the Silver Line opened on July 26, 2014[3] between Wiehle – Reston East and Largo Town Center, with five new stations being added to the existing network west of East Falls Church. The full line to Ashburn, including a station at Dulles International Airport, is expected to be completed in 2018.[13]
Sterling silver Fine silver, for example 99.9% pure silver, is relatively soft, so silver is usually alloyed with copper to increase its hardness and strength. Sterling silver is prone to tarnishing[1][2], and metals other than copper can be used in alloys to reduce tarnishing, as well as casting porosity and firescale. Such metals include germanium, zinc, platinum, silicon, and boron. Recent examples of alloys using these metals include Argentium, Sterlium, Sterilite, and Silvadium.[3]