calendar>>August 7. 2014 Juche 103
Economical Boiler Developed
Pyongyang, August 7 (KCNA) -- A research group of the Physics Faculty of the University of Sciences in the DPRK has recently developed a coal-saving boiler.

The previous boilers were low in heat output due to the loss of heat through the evaporation of coal kneaded with mud.

But the new one is fed with briquette, generating heat output twice higher than the previous ones. And its coal consumption is 30-40 percent lower than that of the previous ones.

It can be also fed with inferior coal.

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