(who knows yet) The strongest ever recorded has been a 9.5 magnitude in Chile (1977) http://earthquake.usgs.gov/earthquakes/world/10_largest_world.php. mercalli scale. Measures earthquake damage, the level of intensity of the earthquake, and the effect of the event on people.
Air Force Memo For Record (MFR) The memorandum for record (commonly referred to as Memo for Record, MR, or MFR) is used as an informal, in-house document. People working together generally pass information back and forth verbally but sometimes it needs to be recorded and filed for future reference. A Memo for Record is perfect for this purpose.
Melt Flow Rate or Melt Flow Index. Melt Flow rate (MFR) or Melt Flow Index (MFI) is the amount of material extruded in 10 minutes under certain testing conditions. The plastic is fed into a heated vertical barrel and a known weight is kept on top of the plunger. The amount of plastic that is extruded in 10 minutes is called the MFR or MFI.