What is the BCSN of a bulk cargo?

MCA Oral Exam Questions

The IMSBC Code defines it as a name which identifies a bulk cargo during transport by sea. 

When a cargo is listed in the IMSBC Code, the Bulk Cargo Shipping Name of the cargo is identified by capital letters in the individual schedules or in the index. When the cargo is a dangerous good, as defined by SOLAS regulation VII/1. 1, the Proper Shipping Name of that cargo is the Bus Cargo Shipping Name. The BCSN for "steel turnings", for example, is Ferrous Metal, Borings, Shavings, Turnings or Cuttings UN2793 in a form liable to self heating. (See the MAIB Report on the "Sava Lake" accident. )