Underground workers always safe

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There are several workers who perform their jobs underground in tunnels, caves, or mines.

They are not as uncommon as you might think. The possibility of requesting help in case of need is delegated to the radio (walkie talkie), but what happens if an isolated worker has a sudden accident and does not have the time to call for help?

Even for automatic security systems it is not possible to use the classic SMS communication channels or data connectivity because the GSM signal does not reach the underground.

In this case, however, it is possible to autonomously bring a Wi-Fi signal that could connect you with a control room or at least with the surface where other external connectivities (GSM and data connection) are available.

With VerticalMan® (the app for lone workers’ safety) you have multiple options to solve this problem. You can:

  1. raise an alarm with a web call through Wi-Fi connectivity in order to alert the rescue team of a control room
  2. use a SIP switchboard to initiate a VoIP call
  3. utilize WhatsApp calls or SMS sent by special service providers available on the web (if the Wi-Fi network is connected to the Internet)
At the time of the alarm it is also possible to know the indoor position of the operator by communicating the nearest Wi-Fi cell or through beacon transmitters. Read our post to how is important to know the indoor position in emergences
Esempio di lavoratori isolati in sicurezza nella miniera con VerticalMan®

In all these areas it is necessary to equip workers with devices designed to frontline work, therefore rugged and that can withstand temperature/humidity excursions and accidental drops. We have certified for VerticalMan® some of the most famous rugged smartphones on the market. Read our article with  specifications compared.

Now let’s see some examples of areas in which there are isolated operators who have to work underground


Along motorways there are tunnels, sometimes long many kilometers.

To build and maintain these tunnels, sometimes the operators work alone.


As for the highways, also railways have countless tunnels to cross mountains.


In metropolis, underground metros are very frequent; both in construction and maintenance many workers have to be considered lone workers.

Aqueducts - Hydroelectric power stations

All the aqueducts require continuous maintenance of the hydraulic systems (pumps, pipelines, tunnels, tanks, disinfection systems) and of the electrical ones (power stations, cabins, electric pumps, power supply for remote reading and control systems); some of these are located underground.

Hydroelectric plants also need daily checks to be carried out, sometimes in tunnels or cisterns below the ground level.


Working in mines foresees, by its nature, to work in quarries, tunnels or in any case underground areas.

Also here, the attention on lone workers must be at the highest level because we are talking about extreme working environments

Underground parking

Even the underground car parking areas we have in our cities have maintenance workers or cleaners who can be categorized as lone workers.

Contact us to analyze together the best solution for your underground lone workers.

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