Cleveland-Cliffs EDI (ANSI X12 4010)
Batch EDI trading-partner interface for outside processors at Burns Harbor, Cleveland, Indiana Harbor and Kote, compliant with ANSI ASC X12 version 4010 over SFTP or an IBM Sterling VAN. Cleveland-Cliffs publishes 23 implementation guidelines (810, 846, 856, 861, 863, 867 and 870 transaction sets) and an X12 transaction testing template as public downloads; the Outside Processors Portal itself requires sign-in. This is the company's only documented machine-to-machine interface - there is no HTTP API.