SEC Seal
SEC Banner
Search the Next-Generation EDGAR System
Filing Detail
Form SC 13D - General statement of acquisition of beneficial ownership:
SEC Accession No. 0000950134-05-024008
Filing Date
2005-12-30
Accepted
2005-12-30 16:30:42
Documents
1
Group Members
YORKTOWN ENERGY PARTNERS VI LPYORKTOWN VI COMPANY LP

Document Format Files

Seq Description Document Type Size
1 SCHEDULE 13D d31684bsc13d.htm SC 13D 76256
  Complete submission text file 0000950134-05-024008.txt   78431
Mailing Address 1660 LINCOLN STREET SUITE 2700 DENVER CO 80264
Business Address 1660 LINCOLN ST STE 2700 DENVER CO 80264 3038395505
HALLADOR PETROLEUM CO (Subject) CIK: 0000788965 (see all company filings)

IRS No.: 841014610 | State of Incorp.: CO | Fiscal Year End: 1231
Type: SC 13D | Act: 34 | File No.: 005-37955 | Film No.: 051294967
SIC: 1311 Crude Petroleum & Natural Gas

Mailing Address 410 PARK AVENUE 19TH FLOOR NEW YORK NY 10022
Business Address 410 PARK AVENUE 19TH FLOOR NEW YORK NY 10022 212-515-2100
Yorktown VI Associates LLC (Filed by) CIK: 0001347608 (see all company filings)

IRS No.: 000000000 | State of Incorp.: DE | Fiscal Year End: 1231
Type: SC 13D