Speed ▁Railway ▁located ▁in ▁east ▁area ▁of ▁X uch ang , ▁Hen an , ▁China . ▁ ▁References ▁ ▁Category : R ail way ▁stations ▁in ▁China ▁Category : St ations ▁on ▁the ▁Sh ij ia z hu ang – W u han ▁High - Speed ▁Railway <0x0A> </s> ▁The ▁Cand oro ▁Mar ble ▁Works ▁is ▁a ▁mar ble ▁cutting ▁and ▁pol ishing ▁facility ▁located ▁in ▁Kno x ville , ▁Tennessee , ▁United ▁States . ▁ ▁Est ab lished ▁as ▁a ▁subs idi ary ▁of ▁the ▁John ▁J . ▁Craig ▁Company ▁in ▁ 1 9 1 4 , ▁the ▁facility ' s ▁mar ble ▁products ▁were ▁used ▁in ▁the ▁construction ▁of ▁numerous ▁monument al ▁buildings ▁across ▁the ▁United ▁States ▁during ▁the ▁ 1 9 3 0 s ▁and ▁ 1 9 4 0 s . ▁ ▁Although ▁Cand oro ▁closed ▁in ▁ 1 9 8 2 , ▁independent ▁mar ble ▁fabric ators ▁continued ▁using ▁the ▁facility ▁until ▁the ▁early ▁ 2 1 st ▁century , ▁when ▁it ▁was ▁purchased ▁by ▁the ▁pres ervation ▁group , ▁South ▁Kno x ▁Heritage . ▁ ▁In ▁ 1 9 9 6 , ▁several ▁of ▁the ▁facility ' s ▁buildings ▁were ▁added ▁to ▁the ▁National ▁Register ▁of ▁Historic ▁Places . ▁ ▁By ▁the ▁beginning ▁of ▁the ▁ 2 0 th ▁century , ▁East ▁Tennessee ▁had ▁become ▁one ▁of ▁the ▁nation ' s ▁major ▁supp liers ▁of ▁finished ▁mar ble . ▁ ▁The ▁John ▁J . ▁Craig ▁Company , ▁which ▁operated ▁several ▁quar ries ▁in ▁the ▁vic inity ▁of