Strata Worldwide Safety Products

Solutions for Underground Communication, Tracking, Monitoring & Control

8995 Roswell Road, Sandy Springs, GA 30350, United States of America




Strata Worldwide is a global leader in advanced mine safety products and technologies.

The company offers a suite of IP-protected solutions that support a safer, more productive working environment and are backed by 28 years of mining and customer support experience. Strata’s product portfolio includes emergency refuge shelters, underground communications and monitoring networks, proximity detection systems, coal mine ventilation systems and a range of engineered secondary roof supports.

Strata’s global footprint includes offices in the United States, South Africa and Australia and a comprehensive network of qualified distributors and partner companies in more than 18 countries.

StratConnect™ communications DigitalBRIDGE™ and DigitalBRIDGE Plus+™

StrataConnect DigitalBRIDGE and DigitalBRIDGE Plus+ are innovative networking solutions that can take existing infrastructure and expand it, enhance it, repair it or even replace it. The primary function of both systems is to create high quality, a high-speed digital platform for the inclusion of Ethernet end-point devices, while at the same time serve as a solution to overcome many of the traditional constraints experienced with typical communication networks underground.

DigitalBRIDGE is a network of industrial-grade coaxial cable, while DigitalBRIDGE Plus+ utilizes leaky feeder coax. Both deliver Ethernet connectivity and DC power anywhere in the mine. They can be quickly integrating with existing fibre-optic and leaky feeder networks to expand functionality and coverage, or be installed as new, stand-alone systems.

StrataConnect DigitalBRIDGE™ is a point-to-multipoint Power-over-Ethernet (PoE) network for underground high-speed data and communication.

  • It carries both DC power and Ethernet over a single coaxial cable
  • It delivers data speeds and capabilities comparable to fibre and can be used for a wide variety of applications including Voice-over-IP (VoIP) communications, Wi-Fi and cellular access, video, telemetry, tele-remoting, tracking and more

StrataConnect DigitalBRIDGE Plus+™ leverages the convenience and dependability of leaky feeder networks and incorporates the power and functionality of DigitalBRIDGE’s PoE technology. Strata’s DigitalBRIDGE Plus+ line amplifiers can be used in conjunction with existing third-party line amps, or in place of them.

Strata’s DigitalBRIDGE Plus+ line amps with Ethernet provide uplinks to fibre networks and through this connection can inject high-speed Ethernet into the leaky feeder network.

  • It carries Ethernet data, DC power and a full spectrum of VHF radio frequencies over a single cable network without affecting daily radio communications
  • It delivers data speeds and capabilities comparable to fiber and can be used for a wide variety of applications including Voice-over-IP (VoIP) communications, Wi-Fi and cellular access, video, telemetry, tele-remoting, tracking and more

StrataConnect™ Wireless

Strata’s wireless and battery-powered communications, tracking and monitoring technology is unmatched. The technology provides truly wireless solutions that require no pre-existing hardwired infrastructure or external power source. Known for its high level of stability and reliability in even the harshest conditions, Strata’s StrataConnect™ Wireless network can support countless functions mine- or site-wide.

  • Establishes and maintains continuous connectivity mine-wide for communications, tracking and remote monitoring
  • Expands networking from the end of wired networks to the working face
  • Self-powering, self-forming, self-monitoring and self-healing
  • Intrinsically Safe for potentially gaseous environments
  • Flexible for temporary or permanent use, both in isolated areas and mine-wide

StrataConnect Wireless Capabilities

  • Two-way text communications – individual and group messaging
  • Personnel and asset tracking – including the Find Miner locator to enable personnel underground to locate one another
  • Atmospheric monitoring – airflow, temperature, pressure, humidity
  • Gas detection – up to 64 different gases
  • Interface with other systems and devices to provide remote monitoring with command and control functions

• Proximity Detection
• Belt and belt drive operations
• Gas sensors
• Fans
• Pumps

Emergency refuge shelters

An emergency refuge shelter provides and maintains an isolated environment of breathable air, food and water to house miners in the event the air in the working section becomes compromised. By isolating occupants from the surrounding atmosphere, workers can remain in a safe environment while rescue efforts are being made.

Refuge shelters should meet certain basic standards, such as:

  • Supply reliable breathing air for a specified duration of time
  • Fully seal workers off from the outside atmosphere
  • Provide cooling, as needed, to prevent heat and humidity build-up
  • Provide carbon dioxide scrubbing
  • Provide food, water and a lavatory

Strata offers three types of emergency refuge shelters.

Steel chamber units are walk-in ready and provide an immediate supply of clean, breathable air. They are sized according to the individual needs of the mine, with multiple length options depending on the number of people to accommodate.

Steel chambers can be mounted on wheels and have removable hitch packages to facilitate manoeuvrability.

They can also be segmented, or divided, into three or four pieces and assembled on-site underground. This is an ideal option for mines with restrictive entry portals, shafts or underground entryways.

Steel chambers can be connected directly to mine’s power and air lines for an indefinite supply of air and lighting. Or they can be stand-alone with an onboard breathing air system and battery backup. Options for supplies range from 24 to 96 hours.

Inflatable chambers are ssentially rolled up, airtight “tents” stored within explosion-resistant containers known as skids. In an emergency, the tent is manually rolled out and quickly inflated using compressed air cylinders, similar to a life raft.

The Inflatable chamber is completely powerless and stand-alone. All components and supplies are stored in the skid. This design is ideal for environments that are highly mobile, have low seam heights and/or have potentially gaseous atmospheres. Optional wheel and hitch packages, as well as additional hardening armour, are available to help facilitate manoeuvrability.

Safe Rooms are permanent underground refuge rooms, built-in-place and equipped with life-sustaining provisions for emergency use. These can be constructed to any size and have numerous options for supplying breathable air: a borehole to the surface, connection to the mine’s compressed air lines or a modular type breathing air system with compressed oxygen cylinders and carbon dioxide scrubbers.

Proximity detection and collision avoidance Strata HazardAvert®

One of Strata’s most prominent, global safety products is the HazardAvert® proximity detection and collision avoidance system. The established technology is designed specifically to overcome the most prevalent accidents experienced at mines today: the unintentional contact between personnel and machinery as well as collisions between machinery in both underground and surface mining.

The system helps to promote safer work practices by creating increased safety awareness and modified worker behavior, while working to prevent accidents and collisions.

StrataConnect Monitoring and Control

Leveraging the utility and flexibility of the Strata/Trolex Sentro Wireless, surface operators can wirelessly monitor underground working environments, and control electronic devices during operations.

Emergency Refuge Chambers

Strata Emergency Refuge Chambers are complete safety systems designed to provide immediate refuge and breathable air in the event that air quality in the working environment becomes compromised. They are intended to be an alternative option when escape is not possible.

Portable Fresh Air Bay Chambers

The Portable Fresh Air Bay is a completely powerless, inflatable refuge chamber that deploys rapidly to provide 96 hours of breathable air to miners trapped underground. High pressure compressed air cylinders inflate and fill the Bay with fresh air and compressed oxygen cylinders and a CO2 scrubber maintain breathable air inside the chamber.

Coal Refuge Chambers

The Strata Safety Coal Refuge Chamber is a rugged, steel-constructed emergency chamber equipped with breathable air free of hazardous gases and smoke.

StrataConnect – Strata Solutions for Underground

Incorporate Strata Wi-Fi into your existing fibre-optic network to achieve powerful underground 'hotspots'. Strata A-Node access points are installed in desired locations along fibre and establish up to 6,000ft (1,800m) of Wi-Fi coverage in each direction. To extend coverage, mines can utilise the Strata B-Node Wireless Backbone to establish wireless connectivity for distances up to 4,000ft (1,200m).

DigitalBRIDGE Plus+: Adding Ethernet to Leaky Feeder

StrataConnect™ DigitalBRIDGE Plus+™ combines the strengths and user benefits of both these technologies into a single, multi-functional network, and adds the additional benefit of carrying DC power for powering end-point devices.

Stata to Exhibit Products at SME 2019

Mining safety and communications technologies provider Strata is to attend SME 2019 in Denver, Colorado, US, between 24 and 27 February.

MSHA Approval for Refuge Alternative Air-Conditioner

The US Mine Safety and Health Administration (MSHA) has awarded Strata Worldwide’s new XP-AC battery-powered air-conditioner for emergency refuge alternatives 30 CFR Part 18 and Part 7 approval.

Strata Expanding Product Lines, Expanding Choices

Strata Worldwide announces StrataConnect DigitalBRIDGE™, a new underground network solution created through a recently established partnership with RFI Technology Solutions of Australia.

Strata to Exhibit at AIMEX 2017

Mining safety and communications technologies supplier Strata is set to exhibit at AIMEX 2017 in Sydney, Australia, on 29 to 31 August.

Strata Signs US Distribution Agreement with Mine Safety Systems Company Trolex

UK-based Trolex has named Strata Worldwide the exclusive US distributor of its fixed gas detectors for underground mining. Trolex is a global leader in the manufacture of gas detectors, sensors and environmental monitoring systems and has become the preferred choice in methane detectors for OEM giants, Joy and Caterpillar Continuous Miners.

Strata Worldwide

8995 Roswell Road

Sandy Springs

GA 30350

United States of America

+1 800 691 6601 - Toll Free +1 770 321 2500 +1 770 321 2520 www.strataworldwide.com