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Personnel Tracking & Emergency Muster

When the alarm goes,
know exactly who is still inside.

Helmet tags and gateways through the tunnel and around the site show where every worker and visitor is, live, in the control room and on a supervisor's phone. No tags to flip, no headcount to wait for, and a muster list that is ready the moment you need it.

Book a Live Demo See How It Works

Live Site View

LIVE
Tunnel A · 2,000 m · 10 gateways
Portal 400 m 800 m 1,200 m 1,600 m
25Underground
2Visitors
1Lost contact
⚠️
Lost contact: J. Nguyen
Last heard at 1,140 m, between gateways 6 and 7, 52 s ago.
Worker (helmet tag) Visitor (phone) Lost contact Gateway

Illustration. The live system updates every second.

Every secondPositions update
One tapStarts a muster
NothingFor workers to remember
On siteYour data, your network
Why It Matters

A Tag Board Only Knows Who Went In

Tag boards and sign-in sheets are the right idea with the wrong timing. They are only ever as accurate as the last person who remembered them, and they cannot tell you anything about where people are now.

2:14 pm · Smoke reported 900 m in

The tag board at the portal says 38 people are underground. It cannot say where they are. It does not know about the fitter who forgot to flip their tag this morning, or the surveyor who walked out ten minutes ago without flipping theirs back.

It will keep saying 38 until someone counts heads at the muster point. That count is the slowest, least certain part of the whole response, and it happens at the exact moment certainty matters most.

Tag board and headcount

What most sites rely on today

  • Only as accurate as the last person who remembered to flip their tag
  • Tells you someone went in, not where they are now
  • Cannot see who has already walked out
  • The headcount starts after the alarm and takes minutes
  • One board at one portal, read by whoever gets there first
  • No record of who was where, or when

Live personnel tracking

What you see instead

  • Nothing to remember: the tag on the helmet does it
  • Position as tight as your gateway layout needs it, updated every second
  • People who walk out drop off the list by themselves
  • The muster list exists before the alarm, sorted deepest first
  • The same view in the control room and on every supervisor's phone
  • Every entry, exit, lost contact and muster recorded automatically
How It Works

Four Parts, No Behaviour Change

Nobody on your crew has to learn anything, carry anything new or do anything differently. The system works from equipment they already wear and a network you already need.

⛑️ STEP 1

A tag on every helmet

A small Bluetooth tag clipped to compulsory PPE. It broadcasts its ID constantly. No buttons, no charging routine.

📡 STEP 2

Gateways through the site

One at each portal, then through the tunnel or around the site wherever you need to see. Each one reports every tag it can hear, every second.

🖥️ STEP 3

A server on your site

Works out which stretch each person is in, keeps the history, and watches for anyone who goes quiet.

📱 STEP 4

Control room and phones

A live tunnel view in the site office and a supervisor app on the phone, both showing the same picture.

How precise is it? That is entirely up to how many gateways you put in. The more gateways, the more granular the answer. A single gateway at the portal tells you who is on site and who is off. A handful through a tunnel tells you which stretch a rescue team should head for. Dozens or hundreds across a building or plant tells you the exact room someone is in, which is what you want for confined spaces. We size it to the answer you actually need, and you can add gateways later as the site grows.
Emergency Response

When the Alarm Goes, the List Is Already Written

A tag board has to be read and a headcount has to be taken. A muster starts with everyone underground already listed, deepest first, with where each of them was last seen.

The first seconds

One tap starts the muster

From the control room or a supervisor's phone. Everyone underground is listed per tunnel, deepest first, with their chainage and the stretch they are in.

As people walk out

The list updates itself

People seen leaving through the portal move to a separate list, so nobody goes looking for someone who is already outside.

At the muster point

Wardens tick people off

The control room and every phone work the same list at the same time. Each tick records who made it and when.

Whoever is left

Rescue knows where to start

Filter to unaccounted only. Anyone the gateways can no longer hear is flagged red with their last known position and how long ago that was.

Afterwards

The record is kept

Every muster is saved with its start and end, every tick and every name. Ready for the debrief, the investigation, or the next drill.

The supervisor app during a muster. Illustration with sample names.

Every Shift

Safety Every Day, Not Just in an Emergency

The muster is the moment it matters most, but supervisors use the live view all day to know who is where before they send anyone else in.

👷

Live Headcount

Per tunnel, per zone, per room, at a glance. Know how many people are in a section before blasting, lifting or sending more crew in.

🚨

Lost Contact, Flagged

If no gateway hears a tag deep inside for a set time, 45 seconds by default, it turns red on every screen with its last known position.

🧍

See Who Is on Their Own

The stretch by stretch view shows immediately when someone is working deep in a section with nobody else nearby.

🔎

Find Anyone in Seconds

Search by name, company, role or phone number from the control room or a phone, and see exactly where they are.

🪪

Visitors and Subcontractors

Visitors sign in on their own phone with their name, company and number, and appear on the same screen as your crew. Their number is one tap away.

⏱️

Time Underground

Every entry and exit is recorded. A daily time-in-tunnel report per person exports to a spreadsheet for shift reconciliation and exposure records.

📶

Gateway Health

Every gateway reports every second. If one goes quiet, it is flagged straight away, so you find a gap in coverage long before an emergency does.

📱

Supervisor App

Site status, people and the muster on a supervisor's phone. Supervisors unlock it with a site PIN, so the same app can be handed to a visitor.

✋

Manual Override

Tag left behind in the tunnel? A supervisor can mark that person as out, and the override is recorded against their name.

Tags or Phones

Helmet Tags for the Crew, Phones for Visitors

Both show up on the same screen. They are not interchangeable, and it is worth knowing why before you decide who gets which.

Helmet tagPhone app
Who it suitsYour crew and regular subcontractorsVisitors, auditors and short-stay contractors
What they doNothing. It is on the helmet.Enter their name, company and number, then tap Start
PowerLong-life battery, no daily chargingThe phone's own battery
Phone locked or app closedUnaffected. It broadcasts all the time.Stops broadcasting. iPhones only broadcast while the app is open with the screen on.
Best used forEveryday tracking and every musterOccasional access where issuing a tag is impractical

That iPhone limitation is why we recommend a tag for anyone who goes underground regularly. The app keeps the screen awake and tells the visitor to keep it open, and if it stops broadcasting underground, the system flags them as lost contact rather than quietly dropping them.

Where It Fits

Anywhere "Somewhere Inside" Is Not Good Enough

Long, enclosed, changing or hard to see into. If you would struggle to answer "who is in there right now?" in under a minute, this is built for you.

🚇

Road & Rail Tunnels

Kilometres of linear site, multiple portals and crews spread from the face to the entrance.

⛏️

Underground Mining

Declines and drives where the answer to "where are they?" has to come fast. See the note on hazardous areas below.

🏗️

Construction Sites

Basements, multi-level structures and layouts that change week to week as the job progresses.

🕳️

Shafts & Caverns

Vertical access and large excavations where nobody can see who is still down there.

🛢️

Confined Spaces

Tanks, pits and ducts where every entry and every exit has to be accounted for.

🏭

Industrial & Processing Plants

Large footprints, shift work and evacuation drills across buildings and yards.

🔧

Shutdowns & Outages

Hundreds of unfamiliar contractors on site for a few weeks. Exactly when a tag board breaks down.

⚡

Utilities

Service tunnels, pump stations and substations with lone workers and limited access.

Why 802 Group

Built by People Who Work Underground

A tracking system is only as good as the radio coverage and the network underneath it. That is the part we have been doing for years.

🚇

We Already Work in Tunnels

We have designed and built tunnel network and wireless infrastructure on major projects. We know how radio behaves in concrete and rock because we have measured it.

📡

Placement Is an RF Problem

Where the gateways go decides how good the location is. We survey and design coverage properly, the same way we approach every wireless job.

🏠

Runs on Your Site

The server, the dashboards and the data stay on your network. An internet outage does not leave you blind in an emergency.

🔓

No Lock-In

Standard Bluetooth tags, commercial gateways and open messaging. Your records sit in your own database, not somebody else's cloud.

➕

Grows With the Job

Tunnels get longer and sites change shape. As the face advances, add a gateway and the tunnel grows on screen.

🧾

A Record, Not Just a Screen

Every entry, exit, lost contact and muster is logged with a time and a name. Useful after a drill, an incident or an audit.

West Gate Tunnel Project Proven Underground

West Gate Tunnel

Major Infrastructure Project | VIC

Tunnel Network & Wireless Communications Infrastructure

Personnel tracking runs over exactly this kind of infrastructure. Our work on the project included:

  • Pre-deployment predictive RF modelling and on-site physical tunnel survey
  • Wireless infrastructure design for tunnel communications and staff connectivity
  • VLAN segmentation for operational technology, safety systems and corporate traffic
  • CCTV and access control network integration
Common Questions

Frequently Asked

As accurate as you need it to be, because that is set by how many gateways you install. One gateway at the portal answers "on site or off site". A run of gateways through a tunnel narrows it to a stretch. A dense layout through a building or plant narrows it to a specific room, which is what confined space work usually calls for. Tell us the answer you need and we will design the gateway layout to deliver it.

It can, but that is a decision for your emergency response plan, not for us. Most sites run both side by side for a period, compare them, and use the system's own records to make the case. We are happy to help you put that evidence together.

Every gateway reports every second, so one that goes quiet is flagged on the dashboard and in the supervisor app straight away. Coverage is designed with overlap, so a single failure leaves a weaker spot rather than a blind one. Put the gateways and the server on backed-up power and the system keeps working through a site outage.

No. Tags talk to gateways over Bluetooth, and gateways talk to a server on your site network. Nothing depends on mobile coverage or an internet connection. Remote access for head office is available if you want it.

The system tracks the tag, which is exactly why it goes on the helmet: it is compulsory PPE underground, so it stays with the person. If a tag is left behind, a supervisor can mark that person as out, and the override is recorded.

No. Tags are only heard by gateways on site, so once someone walks out of range the system simply records that they left. Movement history is kept for a set period and then deleted automatically. This matters to crews, and it is worth telling them up front.

Standard Bluetooth tags and gateways are not certified for explosive atmospheres. If part of your site is a classified hazardous area, tell us the classification and we will specify certified hardware for it or advise where the system should stop.

It depends mostly on the length and layout of the site, which sets how many gateways you need, and on how many people you track. We look at the site first, then give you a fixed-price proposal covering hardware, installation and ongoing support options.

Yes. We run a live demonstration on a simulated site with 150 people coming and going across two tunnels, then start a muster so you can see exactly what your control room and supervisors would see. Book one below.

Live Demonstration

See it running before you commit to anything.

We will show you the live system tracking a simulated site with 150 people across two tunnels, then set off a muster so you can see exactly what your control room and supervisors would see.

Book a Live Demo
Get Started

Book a Demo or Request a Proposal

Tell us about the site and how you account for people today. We will come back to arrange a live demonstration, or to scope a proposal for your site.

✉️
🌐
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Location Adelaide, SA & Melbourne, VIC

Personnel Tracking Enquiry

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