Questions arose in the 1980s as to the safety of mechanically separated meat. In 1982, a report published by U.S. Food Safety and Inspection Service (FSIS) on mechanically separated meat said it was safe and established a standard of identity for the food product. Some restrictions were made on how much can be used and the type of products in which it can be used. These restrictions were based on concerns for limiting intake of certain components in mechanically separated meat, such as calcium. Mechanically separated meat may not be described simply as "meat" on food labels, but must be labeled as "mechanically separated" pork, chicken, or turkey in the ingredients statement. Hot dogs can contain no more than 20% mechanically separated pork.