Iron working came into prominence from about 1,200 BCE. In the 10th century BCE, glass production began in ancient Near East. In the 3rd century BCE, people in ancient India developed wootz steel, the first crucible steel. In the 1st century BCE, glassblowing techniques flourished in Phoenicia. In the 2nd century, CE steel -making became widespread in Han dynasty China. The 4th century CE saw the production of the Iron pillar of Delhi, the oldest surviving example of corrosion-resistant steel.