A member of the S&P 500 Index, Martin Marietta employs more than 8,500 employees at operations spanning 28 states, Canada and the Bahamas. A leading supplier of aggregates and heavy building materials, dedicated teams at Martin Marietta supply the resources for the roads, sidewalks and foundations on which we live. At Martin Marietta, we are always looking for the best and the brightest, for people who have the potential to be the Company's future leaders. We are building on our foundation of success by selecting the finest people and helping them realize their potential. When you decide to build your career at Martin Marietta, you'll know what it's like to be respected, challenged and rewarded.

Brink’s, Incorporated is the world’s premier provider of secure solutions – including global transportation and storage for high-value goods, currency and coin processing, smart safes, ATM services, security services and advanced technology – that deliver critical business intelligence, improved productivity and enhanced protection. Established in 1859, Brink’s employs over 59,900 employees and serves customers through a network of 1,100 facilities and 12,000 vehicles in more than 100 countries on six continents — an unrivaled global footprint that delivers incomparable security, efficiency and visibility across the logistics lifecycle.

Alpha Metallurgical Resources (NYSE: AMR) is a Tennessee-based mining company with operations across Virginia and West Virginia. With customers across the globe, high-quality reserves and significant port capacity, Alpha reliably supplies metallurgical products to the steel industry. Alpha Metallurgical Resources is committed to operating safely, efficiently, and responsibly, with customer service second-to-none and an ongoing focus on continuous improvement.

Alpha Metallurgical Resources (NYSE: AMR) is a Tennessee-based mining company with operations across Virginia and West Virginia. With customers across the globe, high-quality reserves and significant port capacity, Alpha reliably supplies metallurgical products to the steel industry. Alpha Metallurgical Resources is committed to operating safely, efficiently, and responsibly, with customer service second-to-none and an ongoing focus on continuous improvement.

Through three generations of family leadership, Luck Companies has been building strong communities for nearly 100 years. Our three business units, Luck Stone, Luck Ecosystems and Luck Real Estate Ventures make the products that serve as the foundation for the bridges, roads and buildings that keep our economy moving and protect our environment. Driven by our values of integrity, commitment, leadership and creativity, we believe in providing our associates with the tools and support to perform and lead at their best so they can ignite the potential in themselves and others. Our company is a community of people, utilizing the power of values and customer inspired relationships to redefine what’s possible for an industry and make a positive and enduring impact.

Coronado Global Resources Inc. is a leading international producer of high-quality Metallurgical coal (Met coal), an essential element in the production of steel. Our coals, transformed in the steelmaking process, support the manufacture of every day steel-based products that enrich lives around the world – including steel needed for the manufacture of renewable energy infrastructure. We employ approximately 1,600 people directly and over 1,800 contractors globally with our principal executive office located in Brisbane, Australia. Coronado is one of the largest Met coal producers globally, supplying customers on five continents with a range of high quality coals. The Company’s mining operations and development projects are located in Queensland, Australia, Pennsylvania, Virginia and West Virginia in the United States. We are committed to operating in an ethical and sustainable manner and supporting our local communities. Coronado’s management team has extensive global experience with blue-chip resource companies and a successful track record of building and operating coal mining operations in Australia, the United States and globally. Their operational experience is supplemented with a strong knowledge base of domestic and international coal markets and their key drivers.

United Coal Company is a wholly-owned subsidiary of Metinvest Holding Company and is focused on mining the highest quality metallurgical coal reserves in the world, while providing a safe and stable environment for our employees.

Sibelco is a global material solutions company. Our company sources, transforms and distributes specialty industrial minerals – particularly silica, clays, feldspathics and olivine – and is a leader in glass recycling. Sibelco delivers solutions for society and supports the progress of modern life, from drinking water sanitation to solar technology and from flame retardants to smartphone screens. We serve industries as diverse as glass, ceramics, construction, coatings, polymers and water purification. Founded back in 1872, we have grown into a multinational business with operations in around 30 countries and an extensive multi-mineral portfolio. We work with customers worldwide across a broad range of industries, delivering solutions that combine high-specification materials with dedicated technical support. Sibelco seeks to be a great place to work. We strive for continuous improvement in the health and safety of our colleagues and we promote diversity and inclusiveness in all our activities. Sustainability is fundamental part of our vision. As well as developing products that help our customers thrive, we also look at how we can minimise environmental impact and maximise environmental opportunities. We generate economic value through innovation and our ability to meet and anticipate our customers’ expectations. Our goal is to deliver long-term social, environmental and economic value for our stakeholders, continuously guided by our purpose: Material solutions advancing life.

Romarco Minerals Inc. is a gold development company focused on production in the US and Mexico. The Company's flagship project is the Haile Gold Mine in South Carolina which is currently undergoing exploration drilling, bankable feasibility study and permitting. The Pinos Gold District in Mexico is a high grade epithermal vein district in the advanced exploration stage.

Kyanite Mining Corporation is the world's oldest and largest producer of industrial grade kyanite and calcined kyanite (mullite). KMC is a fourth generation family owned company located at 30 Willis Mountain Plant Lane, Dillwyn, Virginia, United States. At Kyanite Mining Corporation we strive to bring to market consistently high quality kyanite and mullite concentrates, produced in an efficient, safe and environmentally sound manner, all the while providing world-class service to our customers.  We understand that many industries all over the world depend on the quality of our material and the timeliness of its delivery, and we accept that responsibility with pride and eagerness.

Headquartered in Raleigh, NC, Sunrock is a leading privately held construction materials supplier. As a vertically integrated company, we produce aggregates, hot mix asphalt and ready mixed concrete materials. We also provide a variety of contracting services to our customers. From our beginning as a small sand and gravel business to our current status as one of North Carolina’s premier aggregate suppliers, we have shown the utmost respect to our team, our clients and the communities in which we operate. Maybe that’s why, after 75 years, our reputation for quality, integrity and service is as solid as ever.

Manage 153 active and inactive mining permits Monitor all areas to ensure compliance to government, safety, and health regulations Perform workplace examinations for the active mining and dump areas to ensure safe operating conditions. Plan and evaluate safety and training programs for the production and preparation departments consistent with MSHA regulations. Prepare and submit surface and underground mining permit applications to Virginia DMME, Kentucky Department for Natural Resources, West Virginia Division of Mining and Reclamation, Tennessee Office of Surface Mining and Alabama Surface Mining Commission Work with State & Federal mine inspectors to resolve various non-compliance issues and violations Sediment structure and spoil storage design, as-built surveys and certifications Short and long term productivity forecasts Prepare monthly tonnage reports and royalty calculations