Market Cap:
$ SEC Filings
| Filing | Filed On |
|---|---|
| FORM 8-K | 06 Aug 2012 |
| FORM 10-Q | 01 Aug 2012 |
| FORM 8-K | 01 Aug 2012 |
| FORM 4 SUBMISSION | 01 Aug 2012 |
| FORM 8-K | 01 Aug 2012 |
| S-3ASR | 01 Aug 2012 |
| FORM 4 SUBMISSION | 01 Aug 2012 |
| FORM 4 SUBMISSION | 01 Aug 2012 |
| FORM 4 SUBMISSION | 24 Jul 2012 |
| FORM 4 SUBMISSION | 10 Jul 2012 |
| FORM 11-K | 27 Jun 2012 |
| FORM 4 SUBMISSION | 26 Jun 2012 |
| BIRDSALL, INC RSP FORM 11-K FOR 12-31-11 | 26 Jun 2012 |
| NICOR COMPANIES SIP FORM 11-K FOR 12-31-11 | 26 Jun 2012 |
| NICOR GAS THRIFT FORM 11-K FOR 12-31-11 | 26 Jun 2012 |
| FORM 4 SUBMISSION | 18 Jun 2012 |
| FORM 4 SUBMISSION | 18 Jun 2012 |
| FORM 4 SUBMISSION | 18 Jun 2012 |
| FORM 4 SUBMISSION | 18 Jun 2012 |
| FORM 4 SUBMISSION | 18 Jun 2012 |
