We have uploaded and updated all PCS Operator Letters dated from 2008 to current year. If we are missing an All PCS Operator Letter please contact us and we will get this updated.
MANGO 1 welding procedure update Section F
Mango 1 welding procedures has been updated in the following “Size of Electrode and Number of Beads”. .250 – up wall thickness fill and cover pass electrode size has been changed for 3/16″ electrode to 5/32″. Welders may increase or… Read More
Welding list updates
A new List of Operators and the Qaulified Welder List is available for download as of 09/05/2019. To add or update these list please contact a board member by clicking here

2019 Fall MANGO Meeting
If you have heard the MANGO general fall meeting has been set for October 22, 2019 at 10 AM in Jefferson City. The meeting will be on the 4th floor in the Ballroom (Room 450) of the Governor Office Building.
MANGO Testing Sites
The MANGO Testing site information has been updated for download under the Welding Resources.

To Our Sponsors
Thank you! To all the sponsors that help make 2019 Mango Conference a success. We could not accomplish this without the support and involvement.

Contact and Mapping Updates to MOCS
The MOPSC Staff would like to remind operators of the importance of complying with the requests from MOCS to update maps and contact data as required by 4 CSR 240-40.030(12)(I). This data and information is used to develop, maintain and… Read More

2018 Excavator List Update
Operators choosing to comply with the excavator education provisions of 4 CSR 240-40.030(12)(I)3.B. and C. through the Missouri One Call System (MOCS) are reminded to review, update, and submit revised excavator lists (or indicate “no additions”) to the Missouri One… Read More

Operators with Replacement Programs for Service/Yard Lines and/or Mains
Please submit information regarding the status of your replacement program(s) to this office no later than March 15, 2019. Please provide details and quantities for the 2018 calendar year (or fiscal year for some main programs approved by the Commission)… Read More

2018 Missouri PSC Gas Safety Annual Report
Please submit your 2018 Missouri PSC Gas Safety Annual Report to this office no later than March 15, 2019. An electronic version of the report form (please be sure to use the form updated for 2017) is available on the… Read More