to EPIRA (Electronic Purchasing & Invoicing Rail Application). EPIRA was developed for companies that supply material to North American railroads. This secure site allows you to receive stock and non-stock purchase orders and send invoices over the Internet. The purchase order information is retained on the site and may be converted into an invoice which can be sent to the customer in seconds.   To use EPIRA, you must be a registered user (see the EPIRA Sign-up page). You will be provided with a company ID and password in order to log onto the site. Each time you sign on, you will be able to access and print new purchase orders, invoice existing purchase orders, and review invoices already sent. You can also create and submit invoices against any purchase order, regardless of how the order was received. For more information on how the process works, see the EPIRA Help Desk. For technical support, contact Rail Customer Service. Or call Mike Ullrich or Alissa Catalan at 847-945-1000.