Tiruvallur revenue department officials on Wednesday rescued 146 migrant workers, including 31 children, from a brick kiln in Avadi. The officials raided RNI Brick Kiln in Pandeshwaram panchayat on a tip and found the workers, all from Chhattisgarh and Odisha, living in subhuman conditions. The owner of the kiln forced them to toil in inhuman conditions.