UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

o

Rule 13d-1(b)

x

Rule 13d-1(c)

o

Rule 13d-1(d)

CUSIP No. 65440N100

1.

Names of Reporting Persons
Macquarie Group Limited

2.

Check the Appropriate Box if a Member of a Group (See Instructions)

(a)

x

(b)

o

3.

SEC Use Only

4.

Citizenship or Place of Organization
Sydney, New South Wales, Australia

Number of
Shares
Beneficially
Owned by
Each
Reporting
Person With

5.

Sole Voting Power
0

6.

Shared Voting Power
0

7.

Sole Dispositive Power
0

8.

Shared Dispositive Power
0

9.

Aggregate Amount Beneficially Owned by Each Reporting Person
4,137,930 units, consisting of 2,758,620 common shares and 1,379,310 warrants for common shares, each warrant exercisable for one common share, deemed beneficially owned due to reporting person’s ownership of Macquarie Bank Limited

10.

Check if the Aggregate Amount in Row (9) Excludes Certain Shares (See Instructions)  o

11.

Percent of Class Represented by Amount in Row (9)
5.8%

12.

Type of Reporting Person (See Instructions)
HC

CUSIP No. 65440N100

1.

Names of Reporting Persons
Macquarie Bank Limited

2.

Check the Appropriate Box if a Member of a Group (See Instructions)

(a)

x

(b)

o

3.

SEC Use Only

4.

Citizenship or Place of Organization
Sydney, New South Wales, Australia

Number of
Shares
Beneficially
Owned by
Each
Reporting
Person With

5.

Sole Voting Power
4,137,930

6.

Shared Voting Power
0

7.

Sole Dispositive Power
4,137,930

8.

Shared Dispositive Power
0

9.

Aggregate Amount Beneficially Owned by Each Reporting Person
4,137,930 units, consisting of 2,758,620 common shares and 1,379,310 warrants for common shares, each warrant exercisable for one common share

10.

Check if the Aggregate Amount in Row (9) Excludes Certain Shares (See Instructions)  o

11.

Percent of Class Represented by Amount in Row (9)
5.8%

12.

Type of Reporting Person (See Instructions)
BK, CO

Item 1.

(a)

Name of Issuer
NiMin Energy Corporation

(b)

Address of Issuer’s Principal Executive Offices
1160 Eugenia Place, Suite 100, Carpinteria, California 93013

Item 2.

(a)

Name of Person Filing
This Schedule 13G is jointly filed by Macquarie Group Limited and Macquarie Bank Limited.

(b)

Address of Principal Business Office or, if none, Residence
The principal business address of Macquarie Group Limited and Macquarie Bank Limited is No.1 Martin Place

Sydney, New South Wales, Australia. 

(c)

Citizenship
Sydney, New South Wales, Australia Corporation

(d)

Title of Class of Securities
Common Stock

(e)

CUSIP Number
65440N100

Item 3.

If this statement is filed pursuant to §§240.13d-1(b) or 240.13d-2(b) or (c), check whether the person filing is a:

(a)

o

Broker or dealer registered under section 15 of the Act (15 U.S.C. 78o);

(b)

o

Bank as defined in section 3(a)(6) of the Act (15 U.S.C. 78c);

(c)

o

Insurance company as defined in section 3(a)(19) of the Act (15 U.S.C. 78c);

(d)

o

Investment company registered under section 8 of the Investment Company Act of 1940 (15 U.S.C. 80a-8);

(e)

o

An investment adviser in accordance with §240.13d-1(b)(1)(ii)(E);

(f)

o

An employee benefit plan or endowment fund in accordance with §240.13d-1(b)(1)(ii)(F);

(g)

o

A parent holding company or control person in accordance with §240.13d-1(b)(1)(ii)(G);

(h)

o

A savings association as defined in Section 3(b) of the Federal Deposit Insurance Act (12 U.S.C. 1813);

(i)

o

A church plan that is excluded from the definition of an investment company under section 3(c)(14) of the Investment Company Act of 1940 (15 U.S.C. 80a-3);

(j)

o

A non-U.S. institution in accordance with § 240.13d–1(b)(1)(ii)(J);

(k)

o

Group, in accordance with § 240.13d–1(b)(1)(ii)(K). If filing as a non-U.S. institution in accordance with § 240.13d–1(b)(1)(ii)(J), please specify the type of institution:____________________________

Item 4.

Ownership

Provide the following information regarding the aggregate number and percentage of the class of securities of the issuer identified in Item 1.

(a)

Amount beneficially owned:   

See responses on the cover pages hereto.

(b)

Percent of class:   

See responses on the cover pages hereto.

(c)

Number of shares as to which the person has:

(i)

Sole power to vote or to direct the vote   

See responses on the cover pages hereto.

(ii)

Shared power to vote or to direct the vote    

(iii)

Sole power to dispose or to direct the disposition of   

See responses on the cover pages hereto.

(iv)

Shared power to dispose or to direct the disposition of   

Item 5.

Ownership of Five Percent or Less of a Class

If this statement is being filed to report the fact that as of the date hereof the reporting person has ceased to be the beneficial owner of more than five percent of the class of securities, check the following   o.

Item 6.

Ownership of More than Five Percent on Behalf of Another Person

Not applicable.

Item 7.

Identification and Classification of the Subsidiary Which Acquired the Security Being Reported on By the Parent Holding Company or Control Person

Not applicable.

Item 8.

Identification and Classification of Members of the Group

Macquarie Group Limited and Macquarie Bank Limited are members of a group for the purposes of this filing.

Item 9.

Notice of Dissolution of Group

Not applicable.

Item 10.

Certification

By signing below I certify that, to the best of my knowledge and belief, the securities referred to above were not acquired and are not held for the purpose of or with the effect of changing or influencing the control of the issuer of the securities and were not acquired and are not held in connection with or as a participant in any transaction having that purpose or effect.

Macquarie Group Limited

9/23/11

Date

/s/ Gus Wong

/s/ Heidi Mortensen

Signature

Signature

Gus Wong

Attorney-in-Fact

Heidi Mortensen

Attorney-in-Fact

Macquarie Bank Limited

9/23/11

Date

/s/ Gus Wong

/s/ Heidi Mortensen

Signature

Signature

Gus Wong

Attorney-in-Fact

Heidi Mortensen

Attorney-in-Fact