CNPCC - What does CNPCC stand for? The Free Dictionary
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The District suffered major reversals in the mid-1920s when the CNPCC used lockouts to break the Fernie and Michel-Natal UMWA Locals in 1924-25, and when many Alberta Locals withdrew later that year.
Between 1956 and 1958, however, production by the CNPCC fell by 44 per cent (see Table 1, last column).