Drones for illegal mining detection and state DGM compliance in India

Drones for illegal mining detection are no longer a discretionary survey tool. They now sit inside a compliance framework that begins with Section 23C of the MMDR Act 1957 and ends with digital artefacts submitted by operators. On 7 May 2026 the Punjab and Haryana High Court ordered compulsory annual drone mapping across every mining site in Haryana (The Tribune, 7 May 2026). The order aligns Haryana with the state DGM compliance model already visible in Rajasthan and Kerala.

Reading illegal mining detection as a Central-state-operator problem

Before mapping the compliance stack, one distinction needs to be locked: DGM versus DGMS. State DGM refers to a state Department of Mines and Geology under the state government's mineral administration wing. DGMS is the Directorate General of Mines Safety, which sits under the Ministry of Labour and Employment and governs occupational safety inside mines. Both bodies touch the same operator, but their statutes and their reporting chains differ.

With that distinction fixed, illegal mining enforcement reads as a three-tier delegation rather than as a standalone drone programme. Section 23C of the MMDR Act 1957 authorises state governments to frame rules that prevent illegal mining and unauthorised mineral transport (Ministry of Mines, 25 November 2024). States translate that authority into mining rules. Operators then produce the digital evidence regulators review during compliance verification.

The state DGM tier looks different across India. Haryana operates through the Mines and Geology Department, Kerala through the Department of Mining and Geology, and Rajasthan through the Mines and Petroleum Department. What each department shares is a common mandate to notify rules, supervise mining leases, and evaluate annual survey submissions.

The operator tier carries the technical burden. Commercial UAS teams, licensed survey companies, and mining engineers generate LiDAR scans, Digital Elevation Models, orthomosaics, and metadata packages. That evidence bundle sits at the base of every mining plan submission the DGM approval desk reviews.

Anchoring survey deliverables in the MMDR Act 1957

The legal foundation for drone surveys does not originate in aviation regulation. It originates in mining legislation, and reading that origin correctly tells an operator which regulator to answer to first.

Section 23C of the MMDR Act 1957 gives states rulemaking power over illegal mining, and Section 21 authorises imprisonment up to five years for illegal mining offences. The MMDR Amendment Act 2015 introduced Section 30C to constitute special courts for expedited trial (Ministry of Mines, 2023). The MMDR Amendment Act 2021 then inserted an explanation to Section 21. That explanation confirms operations "without lawful authority" cover mining without a prospecting licence, mining lease, composite licence, or exploration licence (Ministry of Mines, 2023).

At the operational level, MCDR 2017 Rule 34A (from the Mineral Conservation and Development Rules) requires approved mining plans to include drone-derived survey methods. Sub-rule (5) authorises Standard Operating Procedures issued by the Indian Bureau of Mines. These SOPs govern drone surveys, coordinate systems, digital elevation models, orthomosaics, metadata, and digital submission workflows (Ministry of Mines, 28 December 2022).

These SOPs move drone surveys beyond image collection. Regulators expect measurable geospatial products that integrate with mining plans, production records, and lease boundaries. Deliverables must show positional accuracy, consistent processing methods, and traceable datasets suitable for compliance verification.

For procurement officers preparing state DGM tenders, this changes the evaluation pattern. Successful bids depend on the ability to produce compliant digital outputs rather than merely operating UAV platforms. Aircraft capability alone no longer wins mining contracts.

Building the state DGM notification layer

State notifications translate the MMDR Act authority into operational compliance. Four states now demonstrate different stages of the same regulatory model, and every stage carries technical specifications that operators must satisfy.

The Rajasthan drone survey framework arrived through the Rajasthan Minor Mineral Concession (Second Amendment) Rules notified on 24 October 2024 (Government of Rajasthan, 24 October 2024). The amendment requires annual drone surveys covering the mining lease and a 100-metre buffer outside the lease boundary. Survey outputs must accompany mining plan submissions from April 2025 onward. The buffer serves a practical enforcement purpose because illegal excavation frequently begins immediately outside approved lease boundaries before expanding.

Kerala followed through Kerala Government Order GO(P) No. 4/2025/ID dated 14 February 2025 (Government of Kerala, 14 February 2025). The order inserted Drone-LiDAR requirements into the Kerala Minor Mineral Concession Rules 2015. The Kerala Mineral Drone LiDAR project, executed by KELTRON, shows how state departments can combine airborne laser scanning with digital terrain analysis to monitor extraction across mineral leases.

Haryana reached the same destination through judicial intervention rather than a mining-rule amendment. On 7 May 2026 the Punjab and Haryana High Court directed compulsory annual drone mapping across every mining site in Haryana (The Tribune, 7 May 2026). The Court declined the state's request for a retired-judge-led inquiry committee. That order places recurring aerial surveys inside state oversight rather than treating them as a response triggered only after complaints.

Other states have moved in the same direction. Andhra Pradesh announced coordinated drone deployment from January 2025 involving the Mines, Commercial Taxes, and Transport Departments (The South First, 11 December 2024). Chhattisgarh conducted a drone-supported raid at the Tehkapaar sand mine in Kanker district on 29 April 2026 (Government of Chhattisgarh, 29 April 2026). For the volumetric-survey and safety-integration side of the same operator stack, Kodainya's coverage of volumetric surveys and DGMS integration on Indian mining leases sits alongside this article.

For DaaS providers responding to state tenders, Kodainya's volumetric mining survey service sets out the operator workflow behind these deliverables.

Pairing MSS satellite triggers with operator drone runs

Drone surveys do not replace satellite monitoring. They validate the satellite observations that suggest possible illegal mining activity. India's Mining Surveillance System, or MSS, was designed around that relationship.

The Ministry of Mines launched MSS in October 2016 using satellite imagery to monitor mining lease boundaries across the country (Ministry of Mines, 27 March 2025). The platform compares authorised lease maps with observed surface activity and flags changes occurring outside approved mining areas. Its defining feature is monitoring geometry. MSS analyses a 500-metre zone surrounding every mining lease, and any unusual land-use change inside that zone becomes a trigger for state verification.

Parliamentary records illustrate the workflow in practice. Since inception, MSS has generated 950 satellite triggers. State authorities verified 574 of those cases and confirmed 80 instances of unauthorised mining activity (Ministry of Mines, 25 November 2024).

The Indian Bureau of Mines developed MSS with BISAG Gandhinagar and MeitY, the Ministry of Electronics and Information Technology (Ministry of Mines, 27 March 2025). The system combines geospatial processing with the national mining lease database. Satellite coverage is broad, but satellite imagery alone rarely closes an enforcement case. Resolution limits, acquisition timing, cloud cover, and terrain conditions restrict the evidence available from space.

Drone surveys fill that gap. Once an MSS satellite trigger identifies possible illegal mining, survey teams collect centimetre-level imagery, terrain models, and volumetric measurements across the affected lease. These datasets help state DGMs compare approved excavation boundaries with actual ground conditions. That is why state DGMs contract professional survey operators for MSS trigger verification.

Producing the digital elevation model and orthomosaic artefacts

Regulators assess deliverables rather than flights. Every drone mission supporting state DGM compliance must therefore produce geospatial products that integrate directly into mining administration workflows.

The Digital Elevation Model is the primary deliverable, representing ground elevation across the surveyed lease. Regulators use it to measure excavation depth, identify terrain changes, estimate extracted volumes, and compare field conditions against approved mining plans. Ground control points and post-processed positioning drive the accuracy class the DGM approval desk expects. Kodainya's explainer on RTK and PPK positioning for centimetre accuracy covers the technique behind the number.

An orthomosaic is the second major product. Unlike ordinary aerial photographs, an orthomosaic combines multiple corrected images into a geometrically accurate map. Regulators use the orthomosaic mining lease overlay to verify boundaries, inspect haul roads, identify stockpiles, and detect excavation extending beyond authorised areas. The photogrammetry drone workflow sets the processing pipeline every state DGM annual return relies on.

LiDAR surveys add a third layer where terrain complexity or vegetation limits traditional photogrammetry. Laser pulses produce dense point clouds that capture elevation with high consistency, helping survey teams model slopes, benches, drainage channels, and excavation faces. Kerala's Drone-LiDAR framework shows how these datasets support regulatory decision-making during mineral administration (Government of Kerala, 14 February 2025). The LiDAR drone surveying workflow explainer covers the sensor and processing side.

Rule 34A of the MCDR 2017 links these products to formal mining submissions through the Indian Bureau of Mines SOPs. Operators therefore prepare datasets that satisfy prescribed coordinate systems, metadata requirements, quality controls, and digital submission standards (Ministry of Mines, 28 December 2022). Every drone survey mining lease submission also covers 100 metres beyond the boundary under Rajasthan's notification. That coverage helps authorities detect encroachment before it consolidates (Government of Rajasthan, 24 October 2024).

For commercial UAS operators building compliance-ready capability, Kodainya's aerial mapping solution sets the delivery model behind state DGM tenders across LiDAR mining survey and photogrammetric mapping contracts.

Coordinating drone airspace under the Drone Rules 2021 stack

Mining compliance begins with the MMDR Act, but every survey flight must also satisfy India's aviation framework. A mining lease does not exempt an operator from airspace permissions, aircraft registration requirements, or operational obligations.

The Drone Rules 2021 breakdown sets the operational framework for unmanned aircraft across India. It covers aircraft registration, type certification, remote pilot certification, and DigitalSky flight permissions (Ministry of Civil Aviation, 25 August 2021). The Bharatiya Vayuyan Adhiniyam 2024 transition provides the overarching aviation legislation governing civil aircraft operations after replacing the Aircraft Act 1934 (Government of India, 2024).

Mining surveys therefore run two compliance tracks in parallel. State mining authorities determine whether a survey is required. Aviation authorities determine whether and how that survey may legally fly. Neither approval substitutes for the other.

Airspace routing matters as much as aircraft permissions. Indian mining leases frequently lie inside yellow zones or near controlled airspace boundaries. Kodainya's guide on yellow zone permission on DigitalSky covers the ATC-coordination workflow every mining survey must plan for.

Survey operators preparing state DGM contracts should integrate both workflows into project planning. Flight scheduling, permission timelines, survey windows, processing capacity, and regulatory submissions all become one operational package.

Preparing for the next twelve months of state DGM enforcement

The direction of travel is easy to identify. States are moving from discretionary drone deployments towards recurring compliance programmes supported by standardised digital deliverables.

Rajasthan showed how annual surveys can become part of mining plan approval. Kerala showed how LiDAR can enter routine mineral administration. Haryana established judicial support for recurring aerial mapping through the 7 May 2026 order. Other mineral-producing states are expected to study these three models as they refresh their own gazette notifications over the next twelve months.

The Ministry of Mines is likely to keep expanding the integration between MSS and drone verification. As MSS datasets mature, state departments will have stronger evidence for directing inspections towards locations showing measurable land-use change.

Procurement documents will follow. DGM tenders will name DEM accuracy class, orthomosaic ground sampling distance, LiDAR point-cloud density, and RTK or PPK positioning methodology as bid thresholds. Metadata standards and digital submission formats will appear alongside them rather than as descriptive preferences.

For DaaS providers, Kodainya's Drone-as-a-Service solution sets out the tender-ready workflow behind state DGM contracts. The same operator stack spreads next into adjacent sectors.

Kodainya's drone coverage across Indian industries shows where the compliance model lands next, from mining through power transmission and construction. The Central-state-operator triad will keep tightening as those sectors adopt the same drone-derived evidence standards.