form8-kx2262020.htm

Attachment: 8-K

Exhibit

EXHIBIT 99.1

clf-20200226.xsd
Attachment: XBRL TAXONOMY EXTENSION SCHEMA DOCUMENT

clf-20200226_cal.xml
Attachment: XBRL TAXONOMY EXTENSION CALCULATION LINKBASE DOCUMENT

clf-20200226_def.xml
Attachment: XBRL TAXONOMY EXTENSION DEFINITION LINKBASE DOCUMENT

clf-20200226_lab.xml
Attachment: XBRL TAXONOMY EXTENSION LABEL LINKBASE DOCUMENT

clf-20200226_pre.xml
Attachment: XBRL TAXONOMY EXTENSION PRESENTATION LINKBASE DOCUMENT