EXHIBIT 3
JOINT FILING AGREEMENT
In accordance with Rule 13d-1(f) under the Securities Exchange Act of
1934, as amended, the undersigned hereby agree to the joint filing with
each other of this statement on Schedule 13D and to all amendments to such
Schedule 13D and that such statement on Schedule 13D and all amendments to
such statement is made on behalf of each of them.
IN WITNESS WHEREOF, the undersigned hereby execute this agreement
this 10th day of June, 1998.
CONSOL ENERGY INC.
By: /s/ Xxxxxxx X. Xxxxxx
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CONSOL INC.
By: /s/Xxxxxxx X. Xxxxxx
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Xxxxxxx X. Xxxxxx
Senior Vice President - Administration
E. I. DU PONT DE NEMOURS AND COMPANY
By: /s/Xxxx Xxxxxxx
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Vice President and Treasurer
DUPONT ENERGY COMPANY
By: /s/ Xxxxxxx X. Xxxxxxx
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RHEINBRAUN AKTIENGESELLSCHAFT
By: /s/ X. Xxxxxxx
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By: /s/ ppa. Schonewerk
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RWE AKTIENGESELLSCHAFT
By: /s/ Xxxxxx
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By: /s/ ppa. Wilde
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