KHLIEHRIAT, India — After descending 70 feet on a wobbly bamboo staircase into a dank pit, the teenage miners ducked into a black hole about two feet high and crawled 100 yards through mud before starting their day digging coal.

They wore T-shirts, pajama-like pants and short rubber boots — not a hard hat or steel-toed boot in sight. They tied rags on their heads to hold small flashlights and stuffed their ears with cloth. And they spent the whole day staring death in the face.

Just two months before full implementation of a landmark 2010 law mandating that all Indian children between the ages of 6 and 14 be in school, some 28 million are working instead, according to Unicef. Child workers can be found everywhere — in shops, in kitchens, on farms, in factories and on construction sites. In the coming days Parliament may consider yet another law to ban child labor, but even activists say more laws, while welcome, may do little to solve one of India’s most intractable problems.

“We have very good laws in this country,” said Vandhana Kandhari, a child protection specialist at Unicef. “It’s our implementation that’s the problem.”