320 filings
Page 14 of 16
8-K
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13 Mar 02
Other events
12:00am
8-K
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31 Jan 02
Other events
12:00am
8-K
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4 Jan 02
Other events
12:00am
8-K
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18 Dec 01
Other events
12:00am
8-K/A
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24 Oct 01
Financial statements and exhibits
12:00am
8-K
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27 Aug 01
Markwest Acquires Canadian Natural Gas Production Companies for $51 Million (U.s.)—more Than Doubling Reserves
12:00am
8-K
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14 Aug 01
Other events
12:00am
8-K
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22 Feb 01
Form 8-K [2-01]
12:00am
8-K
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17 Nov 00
Current report
12:00am
S-8
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23 May 00
Registration of securities for employees
12:00am
8-K
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12 May 00
Current report
12:00am