• Aggregate Foreman

    Upstone Materials (Irwindale, CA)
    …meetings. Hourly Rate: $43.95 Main Responsibilities + Reports directly to the Aggregate Manager and/or Superintendent + Ensures that production product is ... areas which can include, but not limited to: dredge, plant , dust machines, support equipment, and lake areas. The...area on a daily basis + Works with the Aggregate Manager and/or Superintendent on scheduling of… more
    Upstone Materials (06/14/25)
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  • Plant Mechanic

    Upstone Materials (Irwindale, CA)
    …responsible to work independently on all maintenance and repair tasks within the aggregate plant . Main Responsibilities + Examines and diagnoses problems, and ... Plant Mechanic Company: UNITED ROCK PRODUCTS Location: Irwindale...Each company supports the other. United Rock provides the aggregate , Blue Diamond Materials provides the hot and warm… more
    Upstone Materials (06/15/25)
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  • Plant Mechanic Helper

    Upstone Materials (Irwindale, CA)
    Plant Mechanic Helper Company: UNITED ROCK PRODUCTS Location: Irwindale Country: USA Type of Contract: Regular / Permanent Publication Date: Jul 19, 2025 ... Each company supports the other. United Rock provides the aggregate , Blue Diamond Materials provides the hot and warm...Under the supervision of the Maintenance Foreman and Site Manager , the Maintenance Mechanic Helper is responsible to work… more
    Upstone Materials (07/19/25)
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  • Plant Scale Clerk

    Upstone Materials (Irwindale, CA)
    Plant Scale Clerk Company: UNITED ROCK PRODUCTS Location: Irwindale Country: USA Type of Contract: Regular / Permanent Publication Date: Jul 31, 2025 United Rock ... Each company supports the other. United Rock provides the aggregate , Blue Diamond Materials provides the hot and warm...of the Foreman who reports directly to the Site Manager , this role also has dotted line responsibility to… more
    Upstone Materials (08/01/25)
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