The Securities and Exchange Commission has not necessarily reviewed the information in this filing and has not determined if it is accurate and complete.
The reader should not assume that the information is accurate and complete.

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
FORM 13F

FORM 13F INFORMATION TABLE
OMB APPROVAL
OMB Number: 3235-0006
Estimated average burden
hours per response: 23.8
COLUMN 1 COLUMN 2 COLUMN 3 COLUMN 4 COLUMN 5 COLUMN 6 COLUMN 7 COLUMN 8
VALUE SHRS OR SH/ PUT/ INVESTMENT OTHER VOTING AUTHORITY
NAME OF ISSUER TITLE OF CLASS CUSIP (x$1000) PRN AMT PRN CALL DISCRETION MANAGER SOLE SHARED NONE
3M Company COM 88579Y101 463 3,071 SH   SOLE   3,071 0 0
AT & T COM 00206R102 1,043 30,300 SH   SOLE   30,300 0 0
AZZ Incorporated COM 002474104 6,695 120,485 SH   SOLE   120,485 0 0
Berkshire Hathaway COM 084670108 5,143 26 SH   SOLE   26 0 0
Berkshire Hathaway Cl B COM 084670702 3,359 25,440 SH   SOLE   25,440 0 0
Cabela's COM 126804301 13,101 280,345 SH   SOLE   280,345 0 0
Caterpillar COM 149123101 2,174 31,985 SH   SOLE   31,985 0 0
Chevron Corp COM 166764100 2,643 29,380 SH   SOLE   29,380 0 0
Cimarex Energy Company COM 171798101 4,405 49,285 SH   SOLE   49,285 0 0
Columbia Sportswear COM 198516106 6,501 133,325 SH   SOLE   133,325 0 0
Continental Resources COM 212015101 788 34,275 SH   SOLE   34,275 0 0
Dawson Geophysical Company COM 239359102 7,771 2,245,916 SH   SOLE   2,245,916 0 0
Helmerich & Payne Inc. COM 423452101 5,389 100,640 SH   SOLE   100,640 0 0
International Business Machine COM 459200101 12,324 89,551 SH   SOLE   89,551 0 0
Johnson & Johnson COM 478160104 11,266 109,680 SH   SOLE   109,680 0 0
Keweenaw Land Association COM 493026108 275 3,392 SH   SOLE   3,392 0 0
Liberty Global A COM 530555101 4,157 98,125 SH   SOLE   98,125 0 0
Liberty Global C COM 530555309 322 7,900 SH   SOLE   7,900 0 0
Liberty Latin America COM 00BTC0MD7 399 9,635 SH   SOLE   9,635 0 0
Manitex International COM 563420108 6,997 1,176,003 SH   SOLE   1,176,003 0 0
Merck & Co. COM 58933Y105 8,142 154,139 SH   SOLE   154,139 0 0
Mesabi Trust Ctfs COM 590672101 1,600 354,003 SH   SOLE   354,003 0 0
NOW Inc. COM 67011P100 1,514 95,708 SH   SOLE   95,708 0 0
National Oilwell Varco COM 637071101 5,136 153,360 SH   SOLE   153,360 0 0
Natus Medical Inc COM 639050103 7,541 156,940 SH   SOLE   156,940 0 0
Nordstrom COM 655664100 209 4,200 SH   SOLE   4,200 0 0
Pfizer, Inc COM 717081103 8,013 248,240 SH   SOLE   248,240 0 0
Powell Industries COM 739128106 7,129 273,875 SH   SOLE   273,875 0 0
Resolute Energy Corporation COM 76116A108 569 654,475 SH   SOLE   654,475 0 0
Sparton Cp COM 847235108 11,406 570,580 SH   SOLE   570,580 0 0
Texas Pacific Land Trust COM 882610108 774 5,910 SH   SOLE   5,910 0 0
Timken Company COM 887389104 4,200 146,900 SH   SOLE   146,900 0 0
Timken Steel Corp. COM 887399103 3,949 471,215 SH   SOLE   471,215 0 0
Whiting Petroleum Corporation COM 966387102 858 90,870 SH   SOLE   90,870 0 0
ABB Ltd ADR 000375204 9,370 528,483 SH   SOLE   528,483 0 0
Autoliv, Inc. ADR 052800109 12,301 98,586 SH   SOLE   98,586 0 0
Banco Latinoamericano de Expor ADR P16994132 6,471 249,549 SH   SOLE   249,549 0 0
E.on SE ADR 268780103 2,046 210,925 SH   SOLE   210,925 0 0
Investor AB 'B' ORD W48102128 13,237 357,960 SH   SOLE   357,960 0 0
Koninklijke Philips Electronic ADR 500472303 9,341 367,014 SH   SOLE   367,014 0 0
Nestle S.A. ADR 641069406 11,607 155,670 SH   SOLE   155,670 0 0
Rio Tinto plc ADR 767204100 638 21,900 SH   SOLE   21,900 0 0
Telefonica de Espana ADR 879382208 5,805 524,829 SH   SOLE   524,829 0 0