He was assisted in the work by the architects Blavette, Deglane and Eugène Hénard.
Prost was the co-founder in 1911 of the Société française des urbanistes (SFU) with architects Donat Alfred Agache, Mr. Auburtin, A. Bérard, Eugène Hénard (Architect of the City of Paris), Léon Jaussely, A. Parenty, engineer Jean Claude Nicolas Forestier and the landscape architect Edouard Redont.
Eugène Hénard, who assisted Dutert, said the Palais des Machines successfully combined aesthetic appearance with engineering function.
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