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    Los Alamos National Laboratory's Leadership

    The Leadership Team is fully committed to enabling the Laboratory’s mission while supporting its people, further enhancing the culture, and meeting the goals outlined in the Lab Agenda.

    Laboratory Director's Office

    Thomas Mason image

    Thomas Mason

    Laboratory Director

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    Frances Chadwick image

    Frances Chadwick

    Staff Director

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    Kelly Beierschmitt image

    Kelly Beierschmitt

    Deputy Laboratory Director Operations

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    John Sarrao image

    John Sarrao

    Deputy Director Science, Technology, and Engineering

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    Robert Webster image

    Robert Webster

    Deputy Laboratory Director Weapons

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    Associate Laboratory Directors

    LeAnne Stribley image

    LeAnne Stribley

    Associate Laboratory Director, Business Management

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    J. Patrick Fitch image

    J. Patrick Fitch

    Associate Laboratory Director, Chemical, Earth & Life Sciences

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    Unica Viramontes image

    Unica Viramontes

    Associate Laboratory Director, Defense Protection Program

    Steven Coleman image

    Steven Coleman

    Associate Laboratory Director, Environment, Safety, Health & Quality

    Bret Simpkins image

    Bret Simpkins

    Associate Laboratory Director, Facilities & Operations

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    Nancy Jo Nicholas image

    Nancy Jo Nicholas

    Associate Laboratory Director, Global Security

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    Dave Teter image

    Dave Teter

    Associate Laboratory Director, Infrastructure and Capital Projects

    Ellen Cerreta image

    Ellen Cerreta

    Associate Laboratory Director, Physical Sciences

    Mark Anthony image

    Mark Anthony

    Associate Laboratory Director, Plutonium Infrastructure

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    Irene Qualters image

    Irene Qualters

    Associate Laboratory Director, Simulation & Computation

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    James C. Owen image

    James C. Owen

    Associate Laboratory Director, Weapons Engineering

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    Charlie Nakhleh image

    Charlie Nakhleh

    Associate Laboratory Director, Weapons Physics

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    John Benner image

    John Benner

    Associate Laboratory Director, Weapons Production

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