Mine to Plant Coal Tracking — 5 Stages Every Plant Needs to Monitor

Mine-to-plant coal tracking is not a single technology — it is a chain of visibility events across five distinct stages, each with its own risk profile and monitoring requirements.

Most Indian plants monitor one or two of these stages. The gaps between stages are where pilferage happens.

Stage 1: Colliery Dispatch

What happens: Truck is loaded at the mine. GPS and activity sensing IoT device is fitted. Trip is created in the platform with dispatch weight, driver, vehicle ID, and source colliery.

What to monitor: Loading activity confirmation (IAS sensor confirms material loaded), tarpaulin sealed, departure timestamp, initial route assignment.

Common failure: Device fitted but trip not created in platform — creating a coverage gap where the truck moves without a live tracking session.

Stage 2: Mine Gate to Highway

What happens: Truck leaves the mine complex and joins the highway. This first stretch — often 5–20 km on mine service roads — is the highest-risk segment. Informal weighbridges, contractor yards, and local buyers cluster near mine exits.

What to monitor: Activity sensing alert for any unloading event within 20 km of the mine. Route adherence from mine gate to highway entry.

Common failure: Monitoring starts only after the truck joins the national highway — missing the highest-risk segment entirely.

Stage 3: Highway Transit

What happens: The main haul — 100–1,500 km depending on the corridor. Multiple halt opportunities: dhabas, weigh stations, informal stops, driver rest.

What to monitor: Every halt classified by location type. Red-zone halts trigger immediate analyst review. Activity sensing runs continuously. Phone-off incidents flagged.

Common failure: Alert fatigue — GPS systems generate 50+ halt alerts per truck per day on long hauls. Without risk scoring, all alerts look equal and none get actioned.

Stage 4: Pre-Gate Staging Area

What happens: Trucks queue outside the plant gate — sometimes for 4–12 hours during peak periods. This staging area is a known risk zone for partial unloading (trucks 'light-loading' before the weighbridge to meet expected weights).

What to monitor: Activity sensing continues in the staging area. Any unloading event outside the plant geofence — including the staging area — is flagged.

Common failure: Geofence set at the plant gate rather than the staging area — creating a blind spot in the last km before delivery.

Stage 5: Plant Weighbridge and Coal Yard

What happens: Truck enters plant, crosses weighbridge (gross weight), unloads in coal yard, crosses weighbridge again (tare weight). Delivered weight = gross - tare.

What to monitor: Activity sensing confirms physical unloading at the coal yard (not elsewhere within plant perimeter). Delivered weight vs dispatch weight. Risk score visible to weighbridge operator before truck drives on.

Common failure: Risk score not integrated with weighbridge system — security team doesn't have trip history when the truck arrives.

The Full Chain

Visiblity across all 5 stages eliminates every known pilferage window. The IAS activity sensing module covers stages 1–5 continuously — no gaps, no blind spots, no dependency on driver cooperation.