Environmental stewardship is a core value at U. S. Steel, stemming from the Gary Principles created in the early 1900s and continuing today in our S.T.E.E.L. Principles.

As a company, U. S. Steel lives its core value of environmental stewardship through three basic principles that all employees are responsible for following.

Those principles are:

  • Compliance with environmental laws and regulations;
  • Continuous improvement in environmental and resource management; and
  • Continued reduction of emissions through innovation.


  • Establish and maintain documented environmental programs that adhere to environmental laws and regulations and, where economically feasible, more stringent voluntary standards using technological options that satisfy financial, operational, and business requirements.
  • Conduct operations in an environmentally sound manner, recognizing that the accountability and responsibility for environmental management extends from the individual employee through all levels of the organization.
  • Communicate to employees the importance of U. S. Steel’s Environmental Management Policy and the significant environmental concerns with potential hazards and impacts of their work, training and motivating employees to conduct their activities in an environmentally sound manner, and providing an opportunity for open communication and dialogue with employees by responding to their environmental concerns. Methods used to create environmental awareness include in-person training for new hires, refresher training, monthly environmental flash newsletters, and other mechanisms.
  • A strong commitment to compliance with environmental laws, regulations, and other environmental requirements applicable to U. S. Steel.
  • Participation with government authorities in the development of technically sound and financially responsible environmental laws, rules, and regulations.


Our commitment to operating in an environmentally responsible manner begins with our policies, programs and processes to ensure compliance with local, state, and federal environmental laws.

U. S. Steel has incorporated International Organization for Standardization (ISO) 14001 into our environmental management systems. ISO 14001 standards provide a framework for achieving more consistent and reliable environmental management and are an indicator of a company’s desire and commitment to foster environmental protection. Today, many of U. S. Steel’s major facilities have achieved and maintain ISO 14001 certification, as shown here.

Our commitment to environmental performance and compliance begins at the top, with regular oversight by our Board of Directors and senior leadership.

We are committed to transparency and practice sharing regarding the company’s environmental performance throughout our organization.

We also prepare for and have procedures to respond to environmental emergencies at all U. S. Steel facilities. In addition, all release incidents are investigated by plant management.