New Delhi, Dec. 11 -- The Delhi Pollution Control Committee (DPCC) on Wednesday ordered the removal of all unauthorised roadside vendors dealing in construction materials to curb a major source of dust in Delhi, officials said. In an order on Tuesday, DPCC invoked Section 31(A) of the Air (Prevention and Control of Pollution) Act, 1981, stating that despite repeated directions from the Supreme Court, the National Green Tribunal and the Commission for Air Quality Management (CAQM), roadside stocking of construction materials continues unchecked. "...unregulated storage, sale and transportation of materials such as sand, bajri, bricks, cement, tiles and stones along roads and public spaces had emerged as a persistent source of fugitive dust a...