3-D GEOPHYSICAL INC

Certification of termination of registration of a class of securities (Section 12(g))

No description available

No description available

Beneficial ownership report for a holder of more than 5% (Schedule 13D)

No description available

No description available

No description available

No description available

No description available

No description available

No description available

No description available

No description available

No description available

2,7

Beneficial ownership report for a passive holder of more than 5% (Schedule 13G) (amendment)

Beneficial ownership report for a passive holder of more than 5% (Schedule 13G) (amendment)

5,7

General form for quarterly reports under Section 13 or 15(d)

Beneficial ownership report for a passive holder of more than 5% (Schedule 13G) (amendment)

5,7

General form for quarterly reports under Section 13 or 15(d)

No description available

5,7

No description available

General form for quarterly reports under Section 13 or 15(d)

Definitive Proxy Statement

7

No description available

2,7

Beneficial ownership report for a passive holder of more than 5% (Schedule 13G)

Beneficial ownership report for a passive holder of more than 5% (Schedule 13G)

Prospectus filed under Rule 424(b)(1)

Amended Initial Registration Statement

Beneficial ownership report for a passive holder of more than 5% (Schedule 13G) (amendment)

Amended Initial Registration Statement

General form for quarterly reports under Section 13 or 15(d)

Registration (IPO) statement under Securities Act of 1933

General form for quarterly reports under Section 13 or 15(d)

General form for quarterly reports under Section 13 or 15(d) (amendment)

Current report pursuant to Section 13 or 15(d)

General form for quarterly reports under Section 13 or 15(d)

No description available

WESTERN ATLAS INC

WESTERN ATLAS INC