From HomoExcelsior

A vertical stream of magnetically accelerated pellets reaching out into space, where a station held aloft by its momentum reverses the direction and directs it towards a receiver on the ground. Essentially a simpler version of a Lofstrom loop. [I'm not sure who originated the idea, judging from Robert Forward's Indistinguishable from Magic it was a collaborative effor t. A paper about the idea can be found in Hyde, Roderick A., "Earthbreak: Earth to Space Transportation," Defense Science 2003+ Vol. 4, No. 4, 1985, pp 78-92 ]

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