DCHP-1 Online
white coal 
water used to generate hydro-electric power; also, the power so generated.
- 1885 Nor should those intrusted with the people's money, committed to their care in confidence for judicious expenditure for the public good, embezzle, in any way, the least portion of that money, under colour of black coal or white coal, ditch contracts, or any other pretext whatever.
- 1954 Here is Ontario screaming about power shortage. But Monsieur Maurice [Duplessis] always has a measure or so of "white coal" to peddle.
- 1885 Nor should those intrusted with the people's money, committed to their care in confidence for judicious expenditure for the public good, embezzle, in any way, the least portion of that money, under colour of black coal or white coal, ditch contracts, or any other pretext whatever.