A 5,000-year-old industrial production center featuring furnaces, hearths, and mud-brick structures has been found in northwest India between two channels of the Ghaggar River. According to a report in Frontline, the settlement, occupied for more than 1,000 years, lacked the fortification walls, streets at right angles, citadel, and area for traders and craftsmen usually seen in Harappan sites. One of the furnaces, used for smelting gold and copper, had a platform where the smith could sit and blow through an underground tube to the fire pit. Nearby hearths were used to produce gold jewelry and copper fish hooks and spear...