The Tamil Nadu government has launched a sweeping enforcement drive against unregistered and non-compliant manufactured sand (M-Sand) manufacturing units, with a recent verification revealing that nearly 40 per cent of the state's 506 registered M-Sand units — approximately 200 factories — have failed to renew their mandatory registrations with the Public Works Department (PWD). The crackdown forms part of a broader push to restore accountability in the state's mineral resources sector following the change in administration.

Scale of the Violations

According to senior officials from the Department of Geology and Mining, all M-Sand manufacturing units in Tamil Nadu are required to register with the PWD and renew that registration every three to five years to remain compliant with quality and operational standards. Authorities have found that many of the flagged units have continued production for more than three years without obtaining the mandatory renewal.

Officials say the lapse raises serious concerns over the quality of M-Sand being supplied to the construction sector. Since these units are operating without updated registrations, the government is examining what legal and administrative action should be taken against them.

Surprise Inspections and Official Transfers

State Minister for Mines and Minerals, Prabhu, has been conducting unannounced inspections across several districts, directing officials to seal quarries found operating in violation of mining regulations. The government has also ordered the mass transfer of mineral resources department officials suspected of failing to prevent or act against illegal mining activities — a signal that accountability is being enforced up the chain of command.

Price Hike Attempt and Government Response

The enforcement drive initially triggered a sharp increase in the price of M-Sand, as producers cited disruptions caused by stricter action against black granite quarries. However, the proposed price hike was withdrawn after Minister Prabhu convened a meeting with industry associations and warned them against exploiting the situation. The episode underscored the market sensitivity of any regulatory tightening in the sand supply chain.

What Is M-Sand and Why It Matters

M-Sand is produced by crushing and processing hard black stone as an alternative to river sand, which is increasingly restricted across India due to environmental concerns. The Tamil Nadu government has long promoted M-Sand as a sustainable substitute for natural river sand in construction. With the construction sector heavily dependent on a steady supply, any disruption — or quality failure from unregulated units — has direct downstream consequences for builders and home buyers alike.

High-Level Review and Next Steps

The issue was reportedly discussed at a recent high-level review meeting on the functioning of the Department of Geology and Mining, chaired by Chief Minister Vijay. Officials indicated that enforcement action against M-Sand manufacturers operating without valid registrations is expected to begin shortly, as the state moves to tighten compliance across the minerals sector.