Job Title:

Administrative Assistant•

Maintenance Location:

Miami, AZ, WHAT

WE OFFER

Pinto Valley is an open-pit copper mine located at the west end of the historic Globe-Miami mining district of central Arizona, approximately 80 miles east of Phoenix. Pinto Valley has been in operation since 1972 and has produced more than four billion pounds of copper. Acquired by Capstone from BHP in 2013, the mine is fully permitted through 2039 and a study is underway to potentially extend the mine life through 2050. Our proximity to the Greater Phoenix metro area provides prospective employees with the option to live in communities such as Mesa, Apache Junction, Gilbert, Chandler, San Tan Valley, or Florence. Our location offers a unique work-life balance, blending the rewarding opportunities of the mining industry with easy access to the vibrant energy of Downtown Phoenix, making it an ideal choice for both individuals and their families. Capstone employees are eligible for an extensive total rewards package, designed to support your physical, mental, financial, and emotional well-being. This package includes, but is not limited to: 401(k) Savings Plan

• Eligible from day one, contribute up to 90% of your salary with a dollar-for-dollar company match up to 6%, fully vested immediately. Retirement Boost
• The company contributes 8.5% of your salary, increasing to 14.2%, with 100% immediate vesting. Employee Share Purchase Plan
• After three months, contribute 2% to 7% of your salary (max $5,000/year) to buy company shares, with a 50% company match, fully vested upon grant. Annual Short Term Incentive Bonus
• Up to 10% This position in on-site 4-10's Monday
• Thursday.

Eligible for overtime as a salaried non-exempt role Affordable Medical, Dental, and Vision benefits (effective on start date), including Telehealth options and additional supplemental insurances Disability and Life Insurance (effective on start date) Paid time-off, including vacation, holidays, sick leave, and parental leave Employee Assistance Program Internal progression opportunities Tuition reimbursement Discounted insurance plans for pets, automobiles and homes

POSITION OVERVIEW

Reporting to the Superintendent Mine Maintenance, the Mine Maintenance Administrative Assistant is responsible for office administrative duties, including filing paperwork, maintaining and ordering supplies, submitting purchase requisitions, entering service entry sheets to authorize payment on services received, interacting with vendors and contractors, submitting repair notifications, submission of employee expense reimbursement requests, posting department-level communications, entering and maintaining data, and regularly completing accurate and time-sensitive reports based on the needs of the Mine Maintenance Department. Safely conducts administrative duties complying with Mine Maintenance Department schedules and plans in accordance with the relevant laws, regulations, standards, and operating procedures. Ensures compliance with conditions of the collective bargaining agreement under the direction of the Employee Services Department. Responsible for supporting the Mine Maintenance Department front-line leadership in completion of all production, time, attendance, safety/incident, and shift reporting as required.

POSITION RESPONSIBILITIES

Ensure employees are working in compliance with all Pinto Valley Mine and MSHA safety guidelines and procedures Ensures department compliance with the CBA in accordance with directions provided by Human Resources Department Ensure that all employees and contractors are certified to execute their assigned tasks Manage reporting requirements and filing of quarterly shifter meetings for the department including notes/minutes and action logs Maintain all forms on the "X" drive, SharePoint, and physical locations as required Perform work with meticulous attention to detail Work independently in a time-sensitive environment Effectively communicate with employees and management Research and resolve issues as required and ensure all company policies are followed Distribute information, reports, and notices Maintain noticeboards and other department-level communications Provide administrative support to the Mine Maintenance Department and collaborate with other Department Administrative Assistants Maintain and monitor crew timesheet accuracy for distribution to payroll Process Purchase Requisitions and Service Entry Sheets Maintain department-level inventories for tools, personal protective equipment, office supplies, consumables, hygiene items, and miscellaneous supplies Establish and maintain accountable and accurate filing of all sensitive and required paperwork Perform monthly inspections to ensure fire extinguishers are punched, the eye wash station is in compliance, and electrical connectors are properly ground checked and current, and monitor the area for hazards. Submit notifications for necessary repairs or maintenance in the offices. Behave in a way that demonstrates support of

Capstone's Vision and Values:

Accountability, Safety, Excellence, and Caring Responsible for but not limited to all tasks/duties assigned or required

POSITION REQUIREMENTS

Required Knowledge 1-3 years' experience in administrative support roles or 1 year of experience working in an administrative support role in a mine operations/maintenance environment Key Competencies / Skills Ability to communicate and work with the Superintendent of Mine Maintenance and their direct reports Intermediate computer skills with the Microsoft Office Suite, with high-level or expert experience in Excel Familiarity with working in a union environment is a plus Familiarity with payroll and timekeeping Valid Arizona Driver's License Able to speak, comprehend, read, and write English Experience with SAP is preferred but not required. Preferred Experience with SAP is preferred but not required.

WORK ENVIRONMENT / PHYSICAL DEMANDS 100

% of the Administrative Assistant's time will be spent in the office All candidates will be required to complete a pre-employment medical exam, drug and alcohol test, and background check. All positions require a pre-placement physical examination to ensure candidates are 'fit for duty'. Additional training and/or testing may be required. Capstone maintains a drug and alcohol-free workplace.

CAPSTONE COPPER IS AN EQUAL OPPORTUNITY

EMPLOYER.