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Filing Detail
Form SC 13D - General statement of acquisition of beneficial ownership:
SEC Accession No. 0000950134-08-015923
Filing Date
2008-08-28
Accepted
2008-08-28 13:43:07
Documents
2
Group Members
YORKTOWN VII ASSOCIATES LLCYORKTOWN VII COMPANY LP

Document Format Files

Seq Description Document Type Size
1 SCHEDULE 13D d59877sc13d.htm SC 13D 63741
2 JOINT FILING AGREEMENT d59877exv99w1.htm EX-99.1 12054
  Complete submission text file 0000950134-08-015923.txt   77976
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.: 081044834
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 212-515-2112
Yorktown Energy Partners VII, L.P. (Filed by) CIK: 0001423080 (see all company filings)

IRS No.: 205451317 | State of Incorp.: DE | Fiscal Year End: 1231
Type: SC 13D