| 2012-11-20 |
4 |
PRIMARY DOCUMENT |
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| 2012-11-20 |
4 |
PRIMARY DOCUMENT |
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| 2012-11-20 |
4 |
PRIMARY DOCUMENT |
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| 2012-11-20 |
4 |
PRIMARY DOCUMENT |
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| 2012-11-20 |
4 |
PRIMARY DOCUMENT |
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| 2012-11-20 |
4 |
PRIMARY DOCUMENT |
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| 2012-11-20 |
4 |
PRIMARY DOCUMENT |
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| 2012-11-20 |
4 |
PRIMARY DOCUMENT |
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| 2012-11-20 |
4 |
PRIMARY DOCUMENT |
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| 2012-11-20 |
4 |
PRIMARY DOCUMENT |
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| 2012-11-07 |
10-Q |
MDU RESOURCES GROUP, INC. 3RD QUARTER 2012 FORM 10-Q |
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| 2012-11-01 |
8-K |
MDU RESOURCES GROUP, INC. FORM 8-K |
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| 2012-10-15 |
8-K |
MDU RESOURCES GROUP, INC. FORM 8-K |
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| 2012-09-28 |
4 |
PRIMARY DOCUMENT |
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| 2012-08-31 |
4 |
PRIMARY DOCUMENT |
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| 2012-08-21 |
8-K |
MDU RESOURCES GROUP, INC. FORM 8-K |
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| 2012-08-07 |
10-Q |
MDU RESOURCES GROUP, INC. 2ND QUARTER 2012 FORM 10-Q |
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| 2012-08-02 |
8-K |
MDU RESOURCES GROUP, INC. FORM 8-K |
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| 2012-06-29 |
4 |
PRIMARY DOCUMENT |
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| 2012-06-14 |
11-K |
MDU RESOURCES GROUP, INC. FORM 11-K |
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| 2012-05-30 |
4 |
PRIMARY DOCUMENT |
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| 2012-05-29 |
4 |
PRIMARY DOCUMENT |
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| 2012-05-25 |
4 |
PRIMARY DOCUMENT |
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| 2012-05-25 |
4 |
PRIMARY DOCUMENT |
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| 2012-05-24 |
4 |
PRIMARY DOCUMENT |
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| 2012-05-04 |
10-Q |
MDU RESOURCES GROUP, INC. 1ST QUARTER FORM 10-Q |
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| 2012-05-01 |
8-K |
MDU RESOURCES GROUP, INC. FORM 8-K |
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| 2012-04-27 |
8-K |
MDU RESOURCES GROUP, INC. FORM 8-K |
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| 2012-04-18 |
8-K |
MDU RESOURCES GROUP, INC. FORM 8-K |
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| 2012-04-12 |
4 |
PRIMARY DOCUMENT |
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| 2012-03-09 |
ARS |
AUTO-GENERATED PAPER DOCUMENT |
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| 2012-03-09 |
DEF 14A |
DEFINITIVE PROXY STATEMENT |
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| 2012-03-06 |
8-K |
8-K |
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| 2012-03-01 |
4 |
PRIMARY DOCUMENT |
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| 2012-02-27 |
4 |
PRIMARY DOCUMENT |
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| 2012-02-24 |
4 |
PRIMARY DOCUMENT |
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| 2012-02-24 |
10-K |
MDU RESOURCES GROUP, INC. 2011 FORM 10-K |
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| 2012-02-21 |
4 |
PRIMARY DOCUMENT |
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| 2012-02-14 |
SC 13G/A |
13G/A - AS OF 12/31/11 |
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| 2012-02-14 |
SC 13G |
MDU AS OF 12/31/2011 |
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| 2012-02-13 |
SC 13G/A |
|
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| 2012-02-03 |
5 |
PRIMARY DOCUMENT |
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| 2012-02-02 |
8-K |
MDU RESOURCES GROUP, INC. FORM 8-K |
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| 2012-01-03 |
4 |
PRIMARY DOCUMENT |
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| 2011-12-21 |
8-K |
MDU RESOURCES GROUP, INC. FORM 8-K |
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| 2011-12-16 |
S-8 POS |
S-8 POS |
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| 2011-12-16 |
S-8 POS |
S-8 POS |
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| 2011-12-12 |
4 |
PRIMARY DOCUMENT |
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| 2011-12-12 |
4 |
PRIMARY DOCUMENT |
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| 2011-12-12 |
4 |
PRIMARY DOCUMENT |
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| 2011-11-22 |
4 |
PRIMARY DOCUMENT |
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| 2011-11-22 |
4 |
PRIMARY DOCUMENT |
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| 2011-11-22 |
4 |
PRIMARY DOCUMENT |
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| 2011-11-22 |
4 |
PRIMARY DOCUMENT |
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| 2011-11-22 |
4 |
PRIMARY DOCUMENT |
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| 2011-11-22 |
4 |
PRIMARY DOCUMENT |
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| 2011-11-22 |
4 |
PRIMARY DOCUMENT |
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| 2011-11-22 |
4 |
PRIMARY DOCUMENT |
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| 2011-11-22 |
4 |
PRIMARY DOCUMENT |
View Document |
| 2011-11-22 |
4 |
PRIMARY DOCUMENT |
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| 2011-11-21 |
8-K |
8-K |
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| 2011-11-18 |
S-3ASR |
S-3ASR |
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| 2011-11-15 |
4 |
PRIMARY DOCUMENT |
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| 2011-11-14 |
4 |
PRIMARY DOCUMENT |
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| 2011-11-04 |
10-Q |
MDU RESOURCES GROUP, INC. 3RD QUARTER 2011 FORM 10-Q |
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| 2011-11-01 |
8-K |
MDU RESOURCES GROUP, INC. FORM 8-K |
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| 2011-10-17 |
8-K |
MDU RESOURCES GROUP, INC. FORM 8-K |
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| 2011-10-03 |
UPLOAD |
|
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| 2011-09-30 |
4 |
PRIMARY DOCUMENT |
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| 2011-09-29 |
CORRESP |
|
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| 2011-09-02 |
CORRESP |
|
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| 2011-08-31 |
UPLOAD |
|
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| 2011-08-05 |
10-Q |
MDU RESOURCES GROUP, INC. 2ND QUARTER 2011 FORM 10-Q |
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| 2011-08-02 |
8-K |
MDU RESOURCES GROUP, INC. FORM 8-K |
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| 2011-06-30 |
4 |
PRIMARY DOCUMENT |
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| 2011-06-27 |
8-K |
MDU RESOURCES GROUP, INC. FORM 8-K |
View Document |
| 2011-06-14 |
11-K |
MDU RESOURCES GROUP, INC. FORM 11-K |
View Document |
| 2011-05-27 |
8-K |
MDU RESOURCES GROUP, INC. FORM 8-K |
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| 2011-05-25 |
4 |
FORM 4 |
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| 2011-05-19 |
S-3ASR |
MDU RESOURCES GROUP, INC. FORM S-3ASR |
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| 2011-05-13 |
8-K/A |
MDU RESOURCES GROUP, INC. FORM 8-K/A |
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| 2011-05-05 |
10-Q |
MDU RESOURCES GROUP, INC. 1ST QUARTER 2011 FORM 10-Q |
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| 2011-05-04 |
3 |
PRIMARY DOCUMENT |
View Document |
| 2011-05-03 |
8-K |
MDU RESOURCES GROUP, INC. FORM 8-K |
View Document |
| 2011-04-29 |
8-K |
MDU RESOURCES GROUP, INC. FORM 8-K |
View Document |
| 2011-04-27 |
8-K |
MDU RESOURCES GROUP, INC. FORM 8-K |
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| 2011-04-04 |
4 |
PRIMARY DOCUMENT |
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| 2011-03-11 |
ARS |
AUTO-GENERATED PAPER DOCUMENT |
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| 2011-03-11 |
DEF 14A |
DEFINITIVE PROXY STATEMENT |
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| 2011-02-24 |
4 |
PRIMARY DOCUMENT |
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| 2011-02-23 |
10-K |
MDU RESOURCES GROUP, INC. FORM 10-K FOR PERIOD ENDED 12/31/2010 |
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| 2011-02-22 |
8-K |
8-K |
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| 2011-02-11 |
SC 13G/A |
13G/A FILING AS OF 12/31/10 |
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| 2011-02-11 |
4 |
PRIMARY DOCUMENT |
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| 2011-02-03 |
8-K |
MDU RESOURCES GROUP, INC. FORM 8-K |
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| 2011-02-02 |
SC 13G/A |
|
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| 2011-01-13 |
NO ACT |
AUTO-GENERATED PAPER DOCUMENT |
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| 2011-01-12 |
8-K |
8K |
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| 2011-01-03 |
4 |
PRIMARY DOCUMENT |
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| 2010-12-08 |
4 |
PRIMARY DOCUMENT |
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