• August 4, 2014 - CIRCADIAN® acquires a controlling stake in ZircLight Inc. with a Series A investment led by ams AG (click here for PDF)
  • June 3, 2014 - CIRCADIAN will be presenting at the Texas Chemical Council's (TCC) EHS Seminar in Galveston, TX on "API RP-755 Fatigue Risk Management Standard: Current Industry Status and Lessons Learned"
  • May 30 - June 2, 2014 - CIRCADIAN will be presenting a Continuing Education Course at the American Industrial Hygiene Conference & Exhibition (AIHce) in San Antonio, TX on "Improving Health & Safety Through Fatigue Risk Management"
  • April 23-24, 2014 - CIRCADIAN will be holding a Professional Development Seminar at the Iowa/Illinois Safety Council (IISC) in Cedar Rapids, IA on "Fatigue Risk Management Systems: Applying New ANSI Standard to Improve Occupational Health & Safety"
  • April 7-11, 2014 - CIRCADIAN will be presenting at the 2014 TapRoot® Summit in Austin, TX on "Fatigue and Human Performance: The Tell-Tale Signs of Fatigue-Related Mistakes"
  • February 23-24, 2014 - CIRCADIAN is presenting at the 143rd Society of Mining, Metallurgy and Exploration (SME) Annual Meeting and Exhibit at the Salt Palace Convention Center in Salt Lake City, UT
  • November 7th, 2013 - CIRCADIAN is presenting "Worker Fatigue Risk Management — Applying New Standards to Improve Health and Safety" to the American Society of Safety Engineers (ASSE) in Portland, OR.
  • September 23, 2013 - CIRCADIAN introduces PRISM, a new software system to help pipeline operations document compliance to PHMSA CRM fatigue regualtions, monitor and mitigate controller fatigue in real-time, and obtain audit and deviation reports. Learn more about PRISM by clicking here.
  • June 11, 2013 - CIRCADIAN's work in the mining industry is highlighted in the Elko Daily Free Press
  • June 4-5, 2013 - CIRCADIAN is presenting at the 2013 International Society of Mine Safety Professionals in Austin, TX.
  • June 2013 - CIRCADIAN, and our work with Barrick Gold Corp. and Dupre´ Logistics, was highlighted in the new Bloomberg BNA Workforce Strategies report "Shift Work:
    Nontraditional Work Schedules Pose Unique Challenges for HR" June 2013, Volume 31, Number 6
  • May 18-19, 2013 - CIRCADIAN is presenting at the 2013 American Industrial Hygiene Conference and Exhibition in Montreal.
  • March 20-21, 2013 - CIRCADIAN's Bill Sirois will be leading a 2-day workshop at the 2013 Global TapRoot® Summit in Gatlinburg, TN. 
  • March 12, 2013 - CIRCADIAN will be leading a session on "Why Fatigue Related Accidents Occur & How ANSI/API 755 Helps Mitigate Them" at the Kronos event: Fatigue Management 2013: Risks and Opportunities at The Petroleum Club, Houston, TX
  • February 26, 2013 - CIRCADIAN is presenting at the 142nd Society of Mining Engineers Annual Meeting and Exhibit in Denver, CO

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Contact Information
Phone: 1.800.284.5001
Local: 1.781.439.6300


Circadian Headquarters
2 Main Street, Suite 310
Stoneham, MA, 02180, USA