MFS is a German abbreviation for "Materialförder- und Siloeinheit", in English ~ "mineral conveyor and storage unit".

MFS rolling stock are used for transport of material, especially rubble, on rails. Often they are used to connect a building side and a material storage location. Here are pictures of the MFS-40 and MFS-100 type waggons of eurailpool manufactured by Plasser & Theurer.

MFS trains 

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Instance of	rolling stock
Authority file  Q1908209 Reasonator Scholia Wikidocumentaries KML file Search depicted

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  Two MFS-100 from side.
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  *Left waggon: a MFS-100 with 4 axes *Right waggon: a MFS-40 with three axes
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  A MFS-100 waggon has four axes on each end to hold its huge weight of 60 tons + 84 tons ruble.
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  The type shield of a MFS-100.
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  The engine and the compressor of a MFS-100.
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  A full view of the MFS-100 diesel engine and the hydraulic components.
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  From begin to end: A machine waggon, a MFS-40 with its arm unloading old rubble, two MFS-40 and two MFS-100.
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  A MFS-100 viewed from back side.
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  The backs of a MFS-40 and a MFS-100 waggon compared. Note they are full compatible although they look different.
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  From begin to end: A DB 100, a DB 212 locomotive. Then two MFS-100, three MFS-40 and one transport waggon for machines.
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  A full MFS-40 set consisting of three MFS40 and three waggons.
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  A waggon type MFS40 from front. Capacity for rubble is ~40 tons.
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  Three MFS-40 connected in a row.
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  Front view of the connection between two MFS-40.
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  Because of its huge weight of 38 tons basis and 40 tons of rubble a MFS needs 3 axes on each side, so totally 6.
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  The end of a MFS-40 row.
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  The beginning of a MFS-40 row.
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  The hydraulic compressor of a MFS-40. All components (conveyor belt, the moveable arm at its front) are driven by hydraulic. Note that the MFS-40 can't move on their own.
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  The clutch of a MFS-40. It's standard european system.
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  Six MFS-40 are pulled by a DB 210 and a DB 100 shunter locomotive.
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  This german text on the arm of a MFS-40 tells not to move on the machine while the 15kV wire is on power.
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  The left waggon moves its load via the belt to the next one.
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  This is the main component of a MFS-40: It's container. It can hold up to 40 tons rubble. Directly under the rubble is a conveyor belt for transport.
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  The type shield of a MFS-40. It was built in 1992 by "Deutsche Plasser Bahnbaumaschinen GmbH".
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  The rubble is being moved from one waggon to the next (all are connected in a line) via a conveyor belt.
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  A operator in orange dress controls how many rubble is unloaded.
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  The movable arm of a MFS-40 unloads rubble. The excavator then dispenses it on the ground.
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  The control-panel of a MFS-40.
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  The rubble is moved from the last MFS-40 to the first one, where it is dropped to ground.