FORM 4
[ ] Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).         
UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES
                                                                                  
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Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, Section 17(a) of the Public
Utility Holding Company Act of 1935 or Section 30(f) of the Investment Company Act of 1940
                      

1. Name and Address of Reporting Person *

Mackus Craig R 		2. Issuer Name and Ticker or Trading Symbol

BUCYRUS INTERNATIONAL INC [ BUCY ] 		5. Relationship of Reporting Person(s) to Issuer (Check all applicable)

_____ Director                      _____ 10% Owner
__ X __ Officer (give title below)      _____ Other (specify below)
CFO and Secretary
(Last)          (First)          (Middle)

PO BOX 500, 1100 MILWAUKEE AVENUE 		3. Date of Earliest Transaction (MM/DD/YYYY)

10/6/2010
(Street)

SOUTH MILWAUKEE, WI 53172
(City)        (State)        (Zip)
4. If Amendment, Date Original Filed (MM/DD/YYYY)

 
6. Individual or Joint/Group Filing (Check Applicable Line)

_ X _ Form filed by One Reporting Person
___ Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1.Title of Security
(Instr. 3) 		2. Trans. Date 2A. Deemed Execution Date, if any 3. Trans. Code
(Instr. 8) 		4. Securities Acquired (A) or Disposed of (D)
(Instr. 3, 4 and 5) 		5. Amount of Securities Beneficially Owned Following Reported Transaction(s)
(Instr. 3 and 4) 		6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 7. Nature of Indirect Beneficial Ownership (Instr. 4)
Code V Amount (A) or (D) Price
Common Stock   10/6/2010     S (1)    10050   D $73   16436   (2) D    
Common Stock                  11828   (3) D    
Common Stock                  4000   (4) D    
Common Stock                  2700   (5) D    
Common Stock                  13800   (6) D    
Common Stock                  3700   (7) D    

Table II - Derivative Securities Beneficially Owned ( e.g. , puts, calls, warrants, options, convertible securities)
1. Title of Derivate Security
(Instr. 3) 		2. Conversion or Exercise Price of Derivative Security 3. Trans. Date 3A. Deemed Execution Date, if any 4. Trans. Code
(Instr. 8) 		5. Number of Derivative Securities Acquired (A) or Disposed of (D)
(Instr. 3, 4 and 5) 		6. Date Exercisable and Expiration Date 7. Title and Amount of Securities Underlying Derivative Security
(Instr. 3 and 4) 		8. Price of Derivative Security
(Instr. 5) 		9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4) 10. Ownership Form of Derivative Security: Direct (D) or Indirect (I) (Instr. 4) 11. Nature of Indirect Beneficial Ownership (Instr. 4)
Code V (A) (D) Date Exercisable Expiration Date Title Amount or Number of Shares
Stock Appreciation Rights   $59.48                      (8) 2/23/2020   Common Stock   13900     13900   D    
Stock Appreciation Rights   $13.52                      (9) 2/24/2019   Common Stock   56000     56000   D    
Stock Appreciation Rights   $51.69                      (10) 2/20/2018   Common Stock   12900     12900   D    
Stock Appreciation Rights   $28.52                      (11) 2/21/2017   Common Stock   18400     18400   D    
Stock Appreciation Rights   $19.882                      (12) 2/16/2016   Common Stock   80400     80400   D    

Explanation of Responses:
( 1)  The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on July 28, 2010.
( 2)  Grant to reporting person of "base" restricted stock under the Omnibus Incentive Plan 2007. The "base" restricted stock vested on December 31, 2009.
( 3)  Grant to reporting person of "premium" restricted stock under the Omnibus Incentive Plan 2007. The "premium" restricted stock fully vested on December 31, 2009.
( 4)  Grant to reporting person of restricted stock under the Omnibus Incentive Plan 2007. The restricted stock vests on December 2010.
( 5)  Grant to reporting person of restricted stock under the Omnibus Incentive Plan 2007. The restricted stock vests on December 2011.
( 6)  Grant to reporting person of restricted stock under the Omnibus Incentive Plan 2007. The restricted stock vests on December 2012.
( 7)  Grant to reporting person of restricted stock under the Omnibus Incentive Plan 2007. The restricted stock vests on December 2013.
( 8)  The stock appreciation rights are granted under the Omnibus Incentive Plan 2007 and will incrementally vest 10%, 15%, 25% and 50%, respectively, on December 31, 2010, 2011, 2012 and 2013.
( 9)  The stock appreciation rights are granted under the Omnibus Incentive Plan 2007 and will incrementally vest 10%, 15%, 25% and 50%, respectively, on December 31, 2009, 2010, 2011 and 2012.
( 10)  The stock appreciation rights are granted under the Omnibus Incentive Plan 2007 and will incrementally vest 10%, 15%, 25% and 50%, respectively, on December 31, 2008, 2009, 2010 and 2011.
( 11)  The stock appreciation rights are granted under the Omnibus Incentive Plan 2007 and will incrementally vest 10%, 15%, 25% and 50%, respectively, on December 31, 2007, 2008, 2009 and 2010.
( 12)  The stock appreciation rights are granted under the Omnibus Incentive Plan 2007 and will incrementally vest 10%, 15%, 25% and 50%, respectively, on December 31, 2006, 2007, 2008 and 2009.

Reporting Owners
Reporting Owner Name / Address
Relationships
Director 10% Owner Officer Other
Mackus Craig R
PO BOX 500
1100 MILWAUKEE AVENUE
SOUTH MILWAUKEE, WI 53172

CFO and Secretary

Signatures
/s/Craig R. Mackus 10/7/2010
** Signature of Reporting Person Date


Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4(b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations. See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB control number.
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