MLM vs KGC Comparison

Martin Marietta is a leading US producer of construction aggregates, having produced roughly 200 million tons in 2025. Its aggregate reserves represent approximately 85 years of supply at 2025 production levels. Over the past several years, the company has increased its exposure to aggregates while reducing its presence in cement and downstream businesses such as concrete and asphalt. More recently, Martin Marietta expanded into an aggregate-adjacent business through its acquisition of Lhoist North America, the largest US producer of lime. The company operates across 28 states, with smaller operations in Canada and the Bahamas.

Kinross Gold is a Canada-based gold producer, producing roughly 2 million gold equivalent ounces in 2025. The company had about a decade of gold reserves at the end of 2025. It operates mines in the Americas and West Africa after selling its low-cost Russian operations in 2022 in response to the invasion of Ukraine. Kinross has historically used acquisitions to fuel expansion into new regions and production growth. In 2022, Kinross purchased the Great Bear project in Canada. If developed as we think likely, it could produce an average of more than 500,000 ounces of gold per year for at least a decade, with its unit cash costs likely in the first quartile of the industry cost curve. Though Great Bear's production is likely to be replacement ounces for falling volumes at other mines.