An curved arrow pointing right. Families in Pakistan work dangerous jobs at brick kilns to pay off loans they take out from kiln owners. Many never escape the cycle of debt. More from Risky ...

At metropolises – Harappa, Mohenjodaro ... and even at Kalibangan, kilns and workshops were unearthed. However, at Binjor (4MSR), very close to Tarkhanwala Dera and Baror, a craftsperson ...

"The use of dung as a critical fuel source at Harappa, for both domestic and industrial purposes (e.g. in pottery or faience kilns) could explain the patterning," wrote the researchers.