What is the fuel, cut neatly into blocks?
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| Posted by  on December 9, 2017  |  |   
They are coal "briquettes", or bricks in English. They are kind of large size pellets made of compressed coal dust or coal "breaks".
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The blocks of coal in the bunker are 'briquettes' - made of compressed coal dust and quite commonly used on French and Swiss steam locomotives. Note the piles of briquettes in the background of my previous photo id http://www.railpictures.net/photo/637899 with a whitewashed line to detect if any are stolen!
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