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
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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.
ATTENTION—PIPELINE STAKEHOLDERS
The message below is being sent on behalf of Sonya T. Proctor, Assistant Administrator, Surface Operations, Transportation Security Administration and Alan K. Mayberry, Associate Administrator for Pipeline Safety, Pipeline Hazardous Materials and Safety Administration, Department of Transportation. UNCLASSIFIED ATTENTION—PIPELINE STAKEHOLDERS… Read More
2020 MANGO Fall Meeting
MANGO General Fall Meeting has been set for October 20, 2020 at 10 AM in Jefferson City. The meeting will be on the 4th floor in the Ballroom (Room 450) of the Governor Office Building
All PSC Operator Letters
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.
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.

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