<SEC-DOCUMENT>0000728889-17-000118-index.html : 20170126
<SEC-HEADER>0000728889-17-000118.hdr.sgml : 20170126
<ACCEPTANCE-DATETIME>20170126105521
ACCESSION NUMBER:		0000728889-17-000118
CONFORMED SUBMISSION TYPE:	SC 13G/A
PUBLIC DOCUMENT COUNT:		1
FILED AS OF DATE:		20170126
DATE AS OF CHANGE:		20170126

SUBJECT COMPANY:	

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			ARCH COAL INC
		CENTRAL INDEX KEY:			0001037676
		STANDARD INDUSTRIAL CLASSIFICATION:	BITUMINOUS COAL & LIGNITE SURFACE MINING [1221]
		IRS NUMBER:				430921172
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		SC 13G/A
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	005-51233
		FILM NUMBER:		17548508

	BUSINESS ADDRESS:	
		STREET 1:		CITY PLACE ONE STE 300
		STREET 2:		ARCH MINERAL CORP
		CITY:			ST LOUIS
		STATE:			MO
		ZIP:			63141
		BUSINESS PHONE:		3149942700

	MAIL ADDRESS:	
		STREET 1:		CITYPLACE ONE SUITE 300
		STREET 2:		ARCH MINERAL CORP
		CITY:			CREVE COEUR
		STATE:			MO
		ZIP:			63141

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	ARCH MINERAL CORP
		DATE OF NAME CHANGE:	19970411

FILED BY:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			OppenheimerFunds, Inc.
		CENTRAL INDEX KEY:			0000728889
		STANDARD INDUSTRIAL CLASSIFICATION:	UNKNOWN SIC - 0000 [0000]
		IRS NUMBER:				000000000
		STATE OF INCORPORATION:			CO
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		SC 13G/A

	BUSINESS ADDRESS:	
		STREET 1:		225 LIBERTY STREET
		CITY:			NEW YORK
		STATE:			NY
		ZIP:			10281-1008
		BUSINESS PHONE:		212-323-0200

	MAIL ADDRESS:	
		STREET 1:		225 LIBERTY STREET
		CITY:			NEW YORK
		STATE:			NY
		ZIP:			10281-1008

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	OPPENHEIMER FUNDS INC
		DATE OF NAME CHANGE:	20020227

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	OPPENHEIMER MANAGEMENT CORP
		DATE OF NAME CHANGE:	19940131
</SEC-HEADER>
<DOCUMENT>
<TYPE>SC 13G/A
<SEQUENCE>1
<FILENAME>archcoalinc1.htm
<DESCRIPTION>SCHEDULE 13G
<TEXT>
Document 1 - file: archcoalinc1.htm

</DOCUMENT>
</SEC-DOCUMENT>