Exhibit 95
United States Steel Corporation
Mine Safety Disclosure
(Unaudited)
Information for the twelve months ended December 31, 2020 follows:
Mine (Federal Mine  Safety and
Health Administration (MSHA) ID)
Total # of
Significant &
Substantial
violations
under 
§104(a) (a)
Total # of
orders
under
§104(b) (a)
Total # of
unwarrantable
failure
citations and
orders under
§104(d) (a)
Total # of
violations
under
§110(b)(2) (a)
Total # of
orders
under
§107(a) (a)
Total dollar
value of
proposed
assessments
from
MSHA		Total # of
mining
related
fatalities
Received
Notice of
Pattern of
Violations
under
§104(e) (a)
(yes/no)?
Received Notice
of Potential to
have Pattern
under
§104(e) (a)
(yes/no)?
Total # of Legal
Actions Pending
with the Mine
Safety and
Health Review
Commission as
of Last Day of
Period (b)
Legal
Actions
Initiated
During
Period		Legal
Actions
Resolved
During
Period
Mt. Iron
(2100820, 2100282)		64 2———$510,092—nono74188148
Keewatin
(2103352)		14 ————$145,119—nono45450

(a)References to Section numbers are to sections of the Federal Mine Safety and Health Act of 1977.
(b)Includes all legal actions pending before the Federal Mine Safety and Health Review Commission, together with the Administrative Law Judges thereof, for each of our iron ore operations. These actions may have been initiated in prior quarters. All of the legal actions were initiated by us to contest citations, orders or proposed assessments issued by the Federal Mine Safety and Health administration, and if we are successful, may result in the reduction or dismissal of those citations, orders or assessments. As of the last day of the period, all 78 legal actions were to contest citations and proposed assessments.