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
Blog

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.
2023-01-09 All Operators Letter
The 2023-01-09 All Operator Letter has been added to our All Operator Letter resource page.
The spring 2023 MANGO General Meeting
The spring 2023 MANGO General Meeting is scheduled for March 29, 2023, beginning at 10:00AM in Jefferson City. The meeting will be on the 4th floor in the Ballroom (Room 450) of theGovernor Office Building (GOB). The PSC Staff and… Read More
MoPSC All Operator Letters Updated
We have added the 2022-11-18 All Operators Letter (Spring MANGO general meeting, NTSB Incident Report) All Operator Letter to the resource page .
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.