"Apart from carrying out document checking of vehicles ferrying sand and gravel, proper monitoring of functioning of JCB machines and tippers, which are registered in the district, should be carried out on a daily basis," she said at a meeting here.
The DC also ordered special checking drives to stop illegal mining of sand and gravel at night.
"In the past couple of days, as many as 16 cases of illegal mining have been registered at various police stations in the district," she said.
She also urged people to inform authorities about any incident of illegal mining.