Smith International, Inc. (NYSE:SII) announced that it plans to release financial results for the periods ended December 31, 2006 on Tuesday, January 30, 2007, prior to the opening of the New York Stock Exchange. The earnings release will be followed by a conference call at 10:00 a.m. Central Time, which is open to the public. The conference call will include a discussion of the quarterly results and a brief question and answer session. Doug Rock, Smith's Chairman and Chief Executive Officer, will host the call and will be joined by Margaret Dorman, Chief Financial Officer, and Don McKenzie, President of M-I SWACO.

Participants may join the conference call by dialing 706-634-6555 and requesting the Smith International, Inc. call hosted by Doug Rock. A replay of the conference call will also be available through Tuesday, February 6, 2007 by dialing 706-645-9291 and entering conference call identification number ?5540239?. A live broadcast of the conference call will be available on the Internet with an archived version accessible after the call. Further information on the broadcast can be found on Smith's website at http://www.smith.com/conferencecall.

Smith International, Inc. is a leading worldwide supplier of premium products and services to the oil and gas exploration and production industry, the petrochemical industry and other industrial markets through its four principal business units ? M-I SWACO, Smith Technologies, Smith Services and Wilson.