An (H) in the matrix indicates the disc was pressed at the Huntsville location.
An (A) in the matrix indicates the disc was pressed at the Anaheim location.
Please note that when entering the unique identifier to the LCCN field for this company, the work order number should be entered without the cut number. For example, if the work order number is 12345-1, only "12345" is required to be entered in to the LCCN field. It is unnecessary to include the remaining cut number, in this case "-1", because even if the disc was repressed, it will normally still retain the original work order number of 12345, but have successive cut numbers thereafter.
Explaining a typical matrix, example:
DISC MFG., INC. (H) W.O. 123456-1 ABCD1234
If there is a number present together with the plant letter, example: (H5), this represents both the plant location and Laser Beam Recorder (LBR) that cut the master.
The internal identifier for their cd's is the "W.O." (Work Order) number seen in the matrix, followed by a dash and the master cut number, example above is: 123456-1. Sometimes the cut number may include a letter after it. Example: 123456-1V This letter would indicate a side project of a DMI employee. Following the W.O. number is the customer (normally catalogue) number, sometimes with an "S.O" prefix. In the example above, it is ABCD1234
Quixote Corporation, a Chicago based parent company, acquired the Huntsville, Alabama (Disctronics H) and Anaheim, California (Disctronics A) plants in full on April 30, 1990 from Disctronics Manufacturing, Inc. and the name was changed to Disc Manufacturing, Inc.
On December 8, 1996, Quixote Corporation entered into the negotiation process of selling the two pressing plants to Cinram Ltd. The purchase by Cinram was completed March 27th 1997. After the sale, matrices no longer included any references to DMI or Disc Mfg., Inc.