Exhibit 99.1

Caterpillar and Bucyrus Receive Hart-Scott-Rodino Second Request

SOUTH MILWAUKEE, Wis. (January 19, 2011) – Bucyrus International, Inc. (Nasdaq: BUCY) announced that Caterpillar Inc. and Bucyrus each received earlier today a request for additional information and documentary material from the Antitrust Division of the United States Department of Justice in connection with the previously announced acquisition of Bucyrus by Caterpillar. This action, often referred to as a second request, is a part of the process under the Hart-Scott-Rodino Antitrust Improvements Act of 1976. Completion of the acquisition remains subject to the expiration or termination of the waiting period under the Hart-Scott-Rodino Act and other customary closing conditions.

About Bucyrus International, Inc.

Bucyrus is a world leader in the design and manufacture of high productivity mining equipment for the surface and underground mining industries. Bucyrus’ surface mining equipment is used for mining coal, copper, iron ore, oil sands and other minerals. Bucyrus’ underground mining equipment is used primarily for mining coal and also used in mining minerals such as potash and trona. In addition to machine manufacturing, Bucyrus manufactures high quality OE parts and provides world-class support services for their machines. Bucyrus’ corporate headquarters is located in South Milwaukee, Wisconsin, USA.

Additional Information Relating to Bucyrus and Where to Find It

This communication may be deemed to be solicitation material in respect of the proposed acquisition of Bucyrus by Caterpillar. In connection with the proposed merger, Bucyrus has filed relevant materials with the Securities and Exchange Commission (the “SEC”), including a proxy statement on Schedule 14A, which was mailed to stockholders of Bucyrus on or about December 22, 2010.

Bucyrus stockholders are urged to read all relevant documents filed with the SEC, including the proxy statement, because they will contain important information about the proposed transaction.

Investors and security holders may obtain free copies of the proxy statement, as well as other filed documents, without charge, at the SEC’s website (http://www.sec.gov). Free copies of Bucyrus’s filings may be obtained by directing a request to Bucyrus’s Investor Relations by telephone to (414)768-4000, in writing to Bucyrus, Attention: Investor Relations, 1100 Milwaukee Avenue, South Milwaukee, WI 53172, by email to amalingowski@bucyrus.com or at Bucyrus’s website (http://www.bucyrus.com).

Bucyrus and its directors and executive officers may be deemed, under SEC rules, to be participants in the solicitation of proxies from the stockholders of Bucyrus with respect to

the proposed transaction. More detailed information regarding the identity of the potential participants, and their direct or indirect interests, by securities holdings or otherwise, is set forth in the proxy statement and other materials to be filed with the SEC in connection with the proposed transaction. Information regarding Bucyrus’s directors and executive officers is also available in Bucyrus’s definitive proxy statement for its 2010 Annual Meeting of Stockholders filed with the SEC on March 12, 2010. These documents are available free of charge at the SEC’s web site at http://www.sec.gov and from Investor Relations at Bucyrus.

Caution Concerning Forward-Looking Statements Relating to Bucyrus

Statements in this communication that relate to Bucyrus’s future plans, objectives, expectations, performance, events and the like may constitute “forward-looking statements” within the meaning of the Private Securities Litigation Reform Act of 1995, Section 27A of the Securities Act of 1933, as amended, and Section 21E of the Securities Exchange Act of 1934, as amended. Future events, risks and uncertainties, individually or in the aggregate, could cause our actual results to differ materially from those expressed or implied in these forward-looking statements. These forward-looking statements may be identified by the use of predictive, future tense or forward-looking terminology, such as “believes,” “anticipates,” “expects,” “estimates,” “intends,” “may,” “will” or similar terms. The material factors and assumptions that could cause actual results to differ materially from current expectations include, without limitation, the following: (1) the inability to close the merger in a timely manner; (2) the inability to complete the merger due to the failure to obtain stockholder approval and adoption of the merger agreement and approval of the merger or the failure to satisfy other conditions to completion of the merger, including required regulatory approvals; (3) the failure of the transaction to close for any other reason; (4) the effect of the announcement of the transaction on Bucyrus’s business relationships, operating results and business generally; (5) the possibility that the anticipated synergies and cost savings of the merger will not be realized, or will not be realized within the expected time period; (6) the possibility that the merger may be more expensive to complete than anticipated, including as a result of unexpected factors or events; (7) diversion of management’s attention from ongoing business concerns; (8) general competitive, economic, political and market conditions and fluctuations; (9) actions taken or conditions imposed by the governmental or regulatory authorities; (10) adverse outcomes of pending or threatened litigation or government investigations; (11) the impact of competition in the industries and in the specific markets in which Bucyrus operates; and (12) other factors that may affect future results of the combined company described in the section entitled “Risk Factors” in the proxy statement to be mailed to Bucyrus’s stockholders Bucyrus’s filings with the SEC that are available on the SEC’s web site located at http://www.sec.gov, including the section entitled “Risk Factors” in Bucyrus’s Annual Report on Form 10-K for the fiscal year ended December 31, 2009. Readers are strongly urged to read the full cautionary statements contained in those materials. All forward-looking statements attributable to Bucyrus are expressly qualified in their entirety by the foregoing cautionary statements. We assume no obligation to update any forward-looking statements to reflect events that occur or circumstances that exist after the date on which they were made.

Bucyrus contact:

Shelley M. Hickman

Director Global Communications

414-768-4599

shickman@bucyrus.com