The steam train in france which runs on coal – and olives

A STEAM TRAIN IN THE SOUTH OF FRANCE, WHICH HAS BEEN RUNNING FOR MORE THAN 100 YEARS, HAS BEGUN EXPERIMENTING WITH USING OLIVES AS FUEL A historic steam train used for tourist rides in the

hills above Nice has experimented with fuel made of _grignon_, the cakey mass left behind in the press when olives are crushed. The first results are encouraging, says the association that

runs the Train des Pignes, in operation since 1891. The train covers 20km between Puget-Théniers (Alpes-Maritimes) and Annot (Alpes-de-Haute-Provence) most days during the summer. READ MORE:

EXPLORE FRANCE BY RAIL: TOUR OF THE COUNTRY'S STEAM TRAINS Jean-Michel Delfino, president of the Groupe d’Etude pour les Chemins de fer de Provence (GECP), said: “There are two main

reasons we tried this. The first is that, with the war in Ukraine, coal for our trains suddenly became harder to find and more expensive”. “With coal mines in most of Europe shut, we use

Polish coal, which is very good quality, but is now hard to come by because so many coal power stations are re-opening”. “The alternative is coal from South America or South Africa, but we

are not too happy about bringing coal from so far away.” ENVIRONMENTAL FACTORS WERE ALSO A CONSIDERATION “The train uses around a tonne of coal a day for its 40km round trip, because the

line is very steep, and reducing this reduces our carbon footprint.” _Grignon_ contains the dried pulp of the olives and crushed stones. Historically, it was used for cooking in some poor

provençal homes, but its main use now is being spread on fields as a soil improver. It also acts as a slight fertiliser but is not as potent as other biological fertilisers. “We mixed it

50-50 with the coal, and it worked well, although it does not have the calories of coal and burns differently,” said Mr Delfino. “Incredibly, the only source we could find was in Tunisia,

where it is sold compressed into blocks, and sometimes these blocks were not so solid, so we are trying to find local oil mills that will convert their own _grignon_ into something we can

use.” Smoke from the mix smells different to pure coal smoke but is not unpleasant, he said. “It doesn’t smell at all of olives or hot olive oil, strangely enough.” One problem, identified

in the trials carried out at the end of the tourist season, was dust from the _grignon_ blocks burning off too quickly and shooting up the exhaust, and also making the footplate slippery.

The _grignon_ also burned quicker and with a more intense heat than coal, and so could be used in a higher percentage on uphill parts of the track where more power is required, and less

elsewhere, if the firemen on the engine can manage it. The Train des Pignes (pine cone train) has two legends as to how it got its name. The first is that, one snowy Christmas in the early

days of the train, it stopped to give coal to a poor family with a sick child. It later risked running out of fuel, until the crew saw masses of pine cones, which they then mixed with the

remaining coal. The other explanation is that the train sometimes went so slowly uphill that passengers would get off to gather cones. RELATED ARTICLES FRENCH OLIVES: QUALITY OVER QUANTITY

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