Our Mission
To deliver safe, reliable and responsibly produced energy products that customers can depend on.
About Us
People, process and purpose.
We are a refining company built around dependable operations, honest communication and responsibility to the communities we serve.
Who We Are
An integrated refining team.
Diamond Shamrock Refining LP processes crude oil into transportation fuels and industrial products. Our operators, engineers, maintenance crews, lab technicians and logistics planners work as one team, because refining only works when every part of the plant works together.
We take pride in doing the basics exceptionally well: running safely, maintaining equipment properly, meeting specifications and keeping our commitments to customers.
Mission & Vision
Where we are headed.
Our Vision
To be the refining partner of choice, known for operational excellence, integrity and care for people and place.
Our Promise
Every barrel handled safely, every product tested, every commitment kept.
Our Values
What guides our decisions.
Safety
Nothing we make is worth an injury. Every person has the authority and the duty to stop unsafe work.
Quality
Products are tested and verified before they leave our gate, every time.
Integrity
We say what we will do, then do it, and we are open when things do not go to plan.
Stewardship
We protect air, water and land as though our own families live next door, because many of our people do.
Reliability
Preventive maintenance and disciplined planning keep our assets and our deliveries on schedule.
Teamwork
We win together, share lessons and invest in each other's growth.
Our People
Skilled crews, long careers.
Our workforce includes process operators, instrument and electrical technicians, mechanical and reliability engineers, chemists, safety professionals and logistics specialists. We invest in apprenticeships, certifications and mentoring so experience is passed on and careers can grow.
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Training
Hands-on simulator and field training for every operating role. -
Mentoring
Experienced crew members guide new team members. -
Local hiring
We prioritize jobs and suppliers from nearby communities.
Our Journey
Milestones.
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Foundation
A refining company is born
Diamond Shamrock Refining LP is established with a focus on safe, dependable operations.
Expansion
Capacity and capability grow
Investment in processing, storage and loading infrastructure broadens our product slate.
Modernization
Technology upgrades
Advanced controls, monitoring and reliability programs improve safety and efficiency.
Today
Building for the long term
A continued commitment to our people, our customers and the communities around us.
Join our team or work with us.
We are always looking for talented people and trusted suppliers.