It also is a significant producer of gasoline
blending components. Lyondell is a
global company operating on five continents and employs approximately 10,000
people worldwide.

by east

These statements are based on
current expectations that involve a number of risks and uncertainties, which
could cause actual results to differ from those anticipated.

news africa

weather central

top regional

Prices will increase as follows:

* In Asia, prices will increase by US $150 per metric ton (pmt)
* In Australia, prices will increase by A $100 pmt
* In Canada, prices will increase by C $0.

america top

, Lyondell Chemical
Company (NYSE: LYO) is increasing its prices for all rutile and anatase
Tiona(R) titanium dioxide (TiO2) products sold to all end-use markets
worldwide, effective on April 1, 2005 or as contracts allow . Millennium Chemicals is a wholly owned subsidiary of
Lyondell.

south east

Tesco Corporation
SEGMENT INFORMATION
Three months and years ended December 31, 2004 and 2003
(Thousands of Canadian Dollars)
Unaudited
------------------------------------------ -------------------------------

Three
months to: December 31, 2004 December 31, 2003
----------------------------- ---------------------------- ---
Operations:
Deprec- Deprec-
Revenues iation Revenues iation
--------------- and Earnings --------------- and Earnings
Third amorti- before Third amorti- before
Internal party zation taxes Internal party zation taxes
---------------- -------- ------- --------------- ------- -------

Products 7,945 11,418 676 2,289 5,171 7,706 614 (611)
Services 2,016 34 ,128 3,777 2,491 790 32,181 3,718 4,360
---------------- -------- ------ - --------------- ------- -------
9,961 45,546 4,453 4,780 5,961 39,887 4 ,332 3,749
---------------- ---------------
------- --------- ---------------

Intersegment
eliminations (227) 1,183 (201) (158)
Product
development
expense - (491) 105 (1,803)
Restructuring
and other
exceptional
items - (4,851) - (7,456 )
Corporate items 458 (5,694) 455 (4,740)
-------- ------- ------- -------
4,684 (5,073) 4,691 (10,408)
-------- ------- ------- -------
-------- ------- ------- ---- ---

Geographic:
Revenues Revenues
---------- ----------

Canada 6,416 7,040
United States 24,887 21,173
Mexico 1,766 3,457
South America 3,502 2 ,429
South East Asia 4,283 2,821
Europe, Africa
and Middle East 4,692 2,967
---------- ----------
45,546 39,887
---------- ----------
---------- ------- ---

Years ended: December 31, 2004 December 31, 2003
----------------------------- -------------------------------
Operations:
Deprec- Deprec-
Revenues iation Revenues iation
--------------- and Earnings --------------- and Earnings
Third amorti- before Third amorti- before
Internal party zation taxes Internal party zation taxes
-------------- -- -------- ------- --------------- ------- -------

Products 27,138 47,052 2,905 1,967 39,245 57,841 1,592 8,763
Services 3,892 132,009 14,876 20,372 5,389 127,822 14 ,169 13,009
---------------- -------- ------- --------------- ------- -------
31,030 179,061 17,781 22,339 44,634 185,663 15,761 21,772

Intersegment
eliminations (799) 1,017 (1,272) 1,055
Product
development
expense - (3,882) 567 (10,460)
Restructuring
and other
exceptional
items - (4,851) - (28,080)
Corporate items 1,923 (19,226) 1,806 (19,514)
-------- ------- ------- -------
18,905 (4,603) 16,862 (35,227)
----- --- ------- ------- -------
-------- ------- ------- -------

Geographic:
Revenues Revenues
---------- -- --------

Canada 21,423 31,396
United States 92,224 83,230
Mexico 9,095 29,250
South America 14,137 9,007
South East Asia 25,570 19 ,242
Europe, Africa
and Middle East 16,612 13 ,538
---------- ----------
179,061 185,663
---------- ----------
---------- ----------

south east

Lyondell Chemical Company, headquartered in Houston, Texas , is North
America's third-largest independent, publicly traded chemical company. The company has a 58.

Correction - Tesco Corporation Reports Results for Fourth Quarter and Full Year 2004

FORWARD-LOOKING STATEMENTS

This presentation contains statements that may constitute
"forward-looking statements" within the meaning of the US Private Securities
Litigation Reform Act of 1995.

europe central

75 percent interest in LYONDELL-
CITGO Refining LP, a refiner of heavy, high-sulfur crude oil.

regional asia

asia east

07 per pound

Strong TiO2 demand worldwide has us continuing our 30-day order lead time
requirements for all Tiona products in all regions in order to help us meet
demand for the 2005 peak season.

These risks
include, but are not limited to: operational risks; potential delays or
changes in plans with respect to customers' exploration or development
projects or capital expenditures; the uncertainty of estimates and projections
relating to levels of rental activities; uncertainty of estimates and
projections of costs and expenses; risks in conducting foreign operations such
as political and fiscal instability, exchange rate fluctuations , and
international taxation; uncertainty and risks in technical results and
performance of technology; restructuring of operations; and other
uncertainties.

south caribbean

Lyondell Increases Prices for Titanium Dioxide Products

HUNT VALLEY, Md.

by weather

Customers have
been previously informed.
Lyondell is a major global manufacturer of basic chemicals and derivatives
including ethylene, propylene, titanium dioxide , styrene, polyethylene,
propylene oxide and acetyls. Trading Symbol:
"TESOF" on NASDAQ
"TEO" on TSX

CALGARY, March 31 - On March 30, 2005 Tesco
Corporation issued the above-referenced press release which contained errors
in the "Segment Information".
Tesco Corporation is a global leader in the design, manufacture and
service of technology based solutions for the upstream energy industry.

asia africa

The revised "Segment Information" schedule that
is a part of this press release supercedes the prior schedule.

europe regional

The
Corporation's mandate is to change the way people drill wells by delivering
safer and more efficient solutions that add real value by reducing the costs
of drilling for and producing oil and gas.

caribbean central

09 per pound
* In Central and South America , prices will increase by US $150 pmt
* In Europe, prices will increase by euro 100 pmt
* In the Middle East and Africa, prices will increase by US $150 pmt
* In the United States , prices will increase by US $0. These statements include, among others,
statements regarding expectations of future revenues, activities, capital
expenditures and earnings and technical results.