- Part 14: For the preceding part double click ID:nRSO0010Pm
/s/ Linda G. Alvarado /s/ Eric D. Hammes
Linda G. Alvarado, Director Eric D. Hammes, Vice President, Controller and Chief Accounting Officer (Principal Accounting Officer)
/s/ Sondra L. Barbour
Sondra L. Barbour, Director
/s/ Thomas K. Brown /s/ Muhtar Kent
Thomas K. Brown, Director Muhtar Kent, Director
/s/ Vance D. Coffman /s/ Edward M. Liddy
Vance D. Coffman, Director Edward M. Liddy, Director
/s/ David B. Dillon /s/ Gregory R. Page
David B. Dillon, Director Gregory R. Page, Director
/s/ Michael L. Eskew /s/ Robert J. Ulrich
Michael L. Eskew, Director Robert J. Ulrich, Director
/s/ Herbert L. Henkel
Herbert L. Henkel, Director
EXHIBIT 31.1
SARBANES-OXLEY SECTION 302 CERTIFICATION
I, Inge G. Thulin, certify that:
1. I have reviewed this annual report on Form 10-K of 3M Company;
2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to
state a material fact necessary to make the statements made, in light of the circumstances under which such statements were
made, not misleading with respect to the period covered by this report;
3. Based on my knowledge, the financial statements, and other financial information included in this report,
fairly present in all material respects the financial condition, results of operations and cash flows of the Registrant as
of, and for, the periods presented in this report;
4. The Registrant's other certifying officer and I are responsible for establishing and maintaining
disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over
financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the Registrant and have:
(a) Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be
designed under our supervision, to ensure that material information relating to the Registrant, including its consolidated
subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is
being prepared;
(b) Designed such internal control over financial reporting, or caused such internal control over financial
reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial
reporting and the preparation of financial statements for external purposes in accordance with generally accepted
accounting principles;
(c) Evaluated the effectiveness of the Registrant's disclosure controls and procedures and presented in this
report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period
covered by this report based on such evaluation; and
(d) Disclosed in this report any change in the Registrant's internal control over financial reporting that occurred
during the Registrant's most recent fiscal quarter (the Registrant's fourth fiscal quarter in the case of an annual report)
that has materially affected, or is reasonably likely to materially affect, the Registrant's internal control over
financial reporting; and
5. The Registrant's other certifying officer and I have disclosed, based on our most recent evaluation of
internal control over financial reporting, to the Registrant's auditors and the audit committee of the Registrant's board
of directors (or persons performing the equivalent functions):
(a) All significant deficiencies and material weaknesses in the design or operation of internal control over
financial reporting which are reasonably likely to adversely affect the Registrant's ability to record, process, summarize
and report financial information; and
(b) Any fraud, whether or not material, that involves management or other employees who have a significant role in
the Registrant's internal control over financial reporting.
/s/ Inge G. Thulin
Inge G. Thulin
Chief Executive Officer
February 11, 2016
EXHIBIT 31.2
SARBANES-OXLEY SECTION 302 CERTIFICATION
I, Nicholas C. Gangestad, certify that:
1. I have reviewed this annual report on Form 10-K of 3M Company;
2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to
state a material fact necessary to make the statements made, in light of the circumstances under which such statements were
made, not misleading with respect to the period covered by this report;
3. Based on my knowledge, the financial statements, and other financial information included in this report,
fairly present in all material respects the financial condition, results of operations and cash flows of the Registrant as
of, and for, the periods presented in this report;
4. The Registrant's other certifying officer and I are responsible for establishing and maintaining
disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over
financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the Registrant and have:
(a) Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be
designed under our supervision, to ensure that material information relating to the Registrant, including its consolidated
subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is
being prepared;
(b) Designed such internal control over financial reporting, or caused such internal control over financial
reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial
reporting and the preparation of financial statements for external purposes in accordance with generally accepted
accounting principles;
(c) Evaluated the effectiveness of the Registrant's disclosure controls and procedures and presented in this
report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period
covered by this report based on such evaluation; and
(d) Disclosed in this report any change in the Registrant's internal control over financial reporting that occurred
during the Registrant's most recent fiscal quarter (the Registrant's fourth fiscal quarter in the case of an annual report)
that has materially affected, or is reasonably likely to materially affect, the Registrant's internal control over
financial reporting; and
5. The Registrant's other certifying officer and I have disclosed, based on our most recent evaluation of
internal control over financial reporting, to the Registrant's auditors and the audit committee of the Registrant's board
of directors (or persons performing the equivalent functions):
(a) All significant deficiencies and material weaknesses in the design or operation of internal control over
financial reporting which are reasonably likely to adversely affect the Registrant's ability to record, process, summarize
and report financial information; and
(b) Any fraud, whether or not material, that involves management or other employees who have a significant role in
the Registrant's internal control over financial reporting.
/s/ Nicholas C. Gangestad
Nicholas C. Gangestad
Chief Financial Officer
February 11, 2016
EXHIBIT 32.1
SARBANES-OXLEY SECTION 906 CERTIFICATION
In connection with the Annual Report of 3M Company (the "Company") on Form 10-K for the period ended December 31, 2015 as
filed with the Securities and Exchange Commission on the date hereof (the "Report"), I, Inge G. Thulin, Chief Executive
Officer of the Company, certify, pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the
Sarbanes-Oxley Act of 2002, that, to my knowledge:
1. The Report fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act
of 1934; and
2. The information contained in the Report fairly presents, in all material respects, the financial condition
and results of operations of the Company.
/s/ Inge G. Thulin
Inge G. Thulin
Chief Executive Officer
February 11, 2016
EXHIBIT 32.2
SARBANES-OXLEY SECTION 906 CERTIFICATION
In connection with the Annual Report of 3M Company (the "Company") on Form 10-K for the period ended December 31, 2015 as
filed with the Securities and Exchange Commission on the date hereof (the "Report"), I, Nicholas C. Gangestad, Chief
Financial Officer of the Company, certify, pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the
Sarbanes-Oxley Act of 2002, that, to my knowledge:
1. The Report fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act
of 1934; and
2. The information contained in the Report fairly presents, in all material respects, the financial condition
and results of operations of the Company.
/s/ Nicholas C. Gangestad
Nicholas C. Gangestad
Chief Financial Officer
February 11, 2016
EXHIBIT 95
MINE SAFETY DISCLOSURES
For the year 2015, the Company has the following mine safety information to report in accordance with Section 1503(a) of
the Act, in connection with the Pittsboro, North Carolina mine, the Little Rock, Arkansas mine, the Corona, California
mine, and the Wausau, Wisconsin mine (including Greystone Plant):
Received
Received Notice of
Total Dollar Value Notice of Potential to Aggregate
Mine or Operating Section of MSHA Total Number Pattern of Have Pattern Legal Actions Aggregate Legal Actions
Name/MSHA Section 104 Section 104(d) Section Section Assessments of Mining Violations Under Section Pending as of Legal Actions Resolved
Identification S&S Citations 104(b) Citations and 110(b)(2) 107(a) Proposed Related Under Section 104(e) Last Day of Initiated During During Period
Number (#) Orders (#) Orders (#) Violations (#) Orders (#) ($) Fatalities (#) 104(e) (yes/no) (yes/no) Period (#) Period (#) (#)
3M Pittsboro ID: 3102153 1 - - - - $ 551 - No No -
3M Little Rock ID: 0300426 11 - - - - $ 13,373 - No No -
3M Corona Plant ID: 0400191 1 - - - - $ 11,135 - No No -
Greystone Plant ID: 4700119 4 - - - - $ 1,595 - No No -
Wausau Plant ID: 4702918 8 - - - - $ 10,535 - No No -
Total 25 - - - - $ 37,189 - - 1 1
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