Martin Marietta Materials

New Braunfels, Texas

This job has expired.


Under the direction of the Maintenance Supervisor, the Machinist operates all machine shop equipment (magnetic drills, portable saws and hand drills, lathes, milling machine, Key Seater and Broaching equipment, Drill Press, Hydraulic Press, and Horizontal Boring Mill). The Machinist will assist in repairs including the fabrication of parts, taking critical measurements, building of assemblies in the shop environment.


  • Develop a plan of action to manufacture parts according to specifications
  • Operate all lathes, milling machines (vertical and horizontal), key seater and broaching equipment, radial drill presses, bench and floor mount drill presses, all types of power band saws, hydraulic presses (electric and manual) and horizontal boring mills
  • Repair and install plant process equipment (gear boxes, finish mill and kiln pinions, FK pumps and compressors, ID fans, motors, babbitt bearings, antifriction bearings, couplings and equipment needed for plant operations
  • Perform and/or make all parts of equipment, complete assemblies of equipment for immediate use and/or for spare parts and also assist in any manner needed to maintain the plant operation
  • Responsible for all plant parts or equipment that can be made, designed or re-designed
  • Upkeep on current machines in shop including maintenance preventative cycle
  • Inspecting finished parts for flaws and defects
  • Other duties as assigned by supervisor

  • High School Diploma or Equivalent
  • Must have a minimum of four years' experience as a machinist in a non-production machine shop

  • Ability to operate all basic machine tools
  • Ability to make mathematical calculations needed for precision measurements
  • Ability to read and understand blueprints, sketches, installation, and repair manuals
  • Ability to read and understand measuring equipment (micrometers, tape measures, rules and scales, dial indicators, thread gauges, levels, squares, etc.)
  • Ability to arc weld and cut with air arc and oxy-acetylene equipment
  • Ability to braze, solder and use spray welding equipment (in shop and in field) for buildup and/or repair of equipment
  • Ability to perform the work needed and communicate needs or problems to supervisors and co-workers
  • Abide by safety rules of the company and MSHA
  • Ability to wear dust masks, respirators and self-contained oxygen breathing apparatus
  • Ability to operate maintenance trucks, forklifts and lifting equipment (chain falls, come-a-longs, hoists-air and electric powered)
  • Ability to read and understand operating and instruction manuals for all equipment
  • Ability to use hand and portable power tools (electric, air, manual and hydraulic) and understand operating and instruction manuals for all equipment
  • Ability to repair, maintain or replace equipment

  • Must be available to walk, crawl, kneel and climb ladders/stairs
  • Climb up to 350 feet above ground on ladders, stairs, scaffolding and / or aerial lifts
  • Ability to lift and carry up to 60 pounds
  • Capability of working for long periods of time under working conditions defined below, confined spaces and heights
  • Stooping, bending and kneeling
  • Walk/stand on uneven ground, walkways and catwalks throughout the work day
  • Communicate in person or by radio minimum of 2 hours per day
  • Able to reason through difficult operations problems, resolve said problems and/or relate same to others
  • Ability to work days or nights as required during equipment outages
  • Must use proper PPE as required
  • Ability to participate in the on call program


Works in all weather conditions including heat, cold, ice, rain and in high humidity and is required to work in all plant environments.Incumbent may be exposed to hazards, e.g. vibrating equipment and mechanical and electrical hazards and heights, traffic, etc.


The above statements are intended to describe the general nature and level of work being performed by people assigned to this classification. They are not to be construed as an exhaustive list of all responsibilities, duties, and skills required of personnel so classified. All personnel may be required to perform duties outside of their normal responsibilities from time to time, as needed.

This job has expired.

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