Mine Assay Lab Intern

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 MineSight platform. Proficient with Microsoft Office products. EDUCATION AND EXPERIENCE Must be enrolled in an accredited college or university on a full-time basis. Must be a Sophomore, Junior, Senior, or Graduate level. Must be majoring in Mining, chemistry, or closely related discipline. No previous experience required. A core value of ASARCO is "Safety First." The Company is committed to helping employees continuously improve their efforts to work in the most safe, inclusive, socially, and environmentally responsible manner practicable. Employee safety and health, both on and off the job, are critically important to the Company. Therefore, ASARCO requires employees to have and effectively demonstrate a good working knowledge of modern safety systems. Each employee will take prime responsibility for ensuring that they work within all required safety procedures and processes. ASARCO is an equal opportunity employer. Candidates must possess a current and valid driver's license. Offers of employment are contingent upon a successful criminal background check and pre-employment physical including a drug screen.

Created: 2026-03-04