EXHIBIT 31

| |  |  | CERTIFICATION |  | OF CHIEF EXECUTIVE OFFICER AND CHIEF FINANCIAL OFFICER PURSUANT TO RULE 13a-14 OF THE
SECURITIES EXCHANGE ACT OF 1934,AS AMENDED, AS ADOPTED PURSUANT TO SECTION 302 OF
THE SARBANES-OXLEY ACT OF 2002
| |  |  | ------------- |  | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

I, Ruairidh Campbell, chief executive
officer and chief financial officer of Montana Mining Corp., (Registrant)
certify that:

1.    
          I have reviewed this Quarterly Report on Form 10-QSB (Report) of
          Registrant;

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 period presented in this Report;

4.    
          I am responsible for establishing and maintaining disclosure controls and
          procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e) for the
          Registrant and have:

a)    
          Designed such disclosure controls and procedures, or caused such disclosure
          controls and procedures to be designed under my supervision, to ensure that
          material information relating to the Registrant, including its consolidated
          subsidiaries, is made known to me by others within those entities, particularly
          during the period in which this Report is being prepared;

b)    
          Evaluated the effectiveness of the Registrants disclosure controls and
          procedures and presented in this Report my 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

c)    
          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 registrants 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.    
          I have disclosed, based on my most recent evaluation, to the Registrants
          auditors and the audit committee of 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 controls 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 controls over
          financial reporting.

Date: October 27, 2005

/s/ Ruairidh Campbell

Ruairidh Campbell, Chief
Executive Officer and Chief Financial Officer