MSA vs ACM Comparison

MSA Safety Inc makes safety products that are used to protect workers in the oil and gas and mining industries. The company's product offerings include breathing apparatuses, fall protection, portable gas detection systems, industrial head protection, fire and rescue helmets, and fixed gas and flame detection systems, among others. The end markets for its products include the fire service, contractor, industrial, mining, oil and gas, and utilities industries. The company has organized its business into four geographical operating segments that are aggregated into two reportable segments: Americas and International. The majority of its revenue is generated from the Americas segment, which is comprised of the company's operations in Northern North America and Latin America geographies.

Aecom is one of the largest global providers of advisory, design, and engineering services. It serves a broad spectrum of end markets, including water, transportation, and environment. Based in Dallas, Aecom employs 51,000 people. The company generated $16.1 billion in sales in fiscal 2025.