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Assay Student Intern

Tempur Sealy International
United StatesinternshipVerifiedPosted 2 Apr 2026

About the role

About Asarco Grupo Mexico   

ASARCO LLC is a subsidiary of one of the world’s largest Copper producers, Grupo Mexico, which ranks third in the United States in Copper production. ASARCO LLC is a fully integrated miner, smelter, and refinery of copper in the United States with over 2,800 employees spanning across five sites in Arizona and Texas.   

POSITION OVERVIEW  

We are looking for motivated students with a strong interest in the mining industry. Our internship program is 10 weeks long, in which you will receive important industry training and get involved in meaningful real-world projects like planning a program, designing a process, or implementing technology. The culmination of your program will include an opportunity to present your work to management at ASARCO & Grupo Mexico.  

ESSENTIAL FUNCITIONS  

  • Assist in processing Daily SXEW samples  
  • Free Acid Analysis  
  • Chloride Analysis  
  • Electrolyte titrations for Cu and acid  
  • Dilution of SXEW samples for ICP analysis (for ICP trained technicians)  
  • Fe2+ analysis  
  • pH and ORP readings  
  • Send out dailies report by 7am Mon-Fri and 9am on Saturday and Sunday  
  • Process Blasthole Samples  
  • Weigh all blasthole samples  
  • Process four separate methods of Cu solubility  
  • Total Copper  
  • Acid Soluble Copper  
  • Cyanide Soluble Copper  
  • Quick Leach Test  
  • Dilute all samples and prepare for ICP analysis by a trained Chemist/Chem Technician.  
  • Process Copper Cathodes  
  • Sulfur analysis by LECO  
  • Lead analysis by DC-ARC  
  • Log Keeping: There are various logbooks throughout the lab that have aligned spreadsheets in need of regular updating.  
  • General Housekeeping  
  • Preparing reagents  
  • Keeping the lab clean and tidy  
  • Washing centrifuge tubes and plant solution sample bottles daily  
  • Maintaining supplies by reporting to Lab Chemist all inventory run outs and re-plenishing.  
  • Assay lab projects as assigned.  
  • Responsible for executing, supporting, and enforcing the Company's Environmental, Health and Safety programs as required by OIS policy, directives, and principles. 

KNOWLEDGE, SKILLS, AND ABILITIES  

  • Excellent organizational and interpersonal abilities.   
  • Time management skills in performing multiple projects with various team members.   
  • Strong verbal and written communication skills to effectively present findings and make recommendations.   
  • Proficient in MineSightplatform.  
  • Proficient with Microsoft Office products.   
Qualifications

EDUCATION AND EXPERIENCE  

  • Must be enrolled in an accredited college or university on a full-time basis.   
  • Must be a Sophom

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Company

Tempur Sealy International

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