On 1894, he settled in Monaco where he met Prince Albert I who asked him what could be done to ban the dust stirred up by the first motor vehicles. He applied an idea found in Indonesian hospitals where wooden floors were coated with tar: he developed a new mixture of tar, gravel and sand for binding the dust.
A monument next to the Saltina bridge in Brig commemorates Ernest Guglielminetti.
- (in Italian)(in French)(in German) Heldner, Paul (21 July 2005). "Guglielminetti, Ernest". Dictionnaire historique de la Suisse. Retrieved 31 July 2013.
- "History of asphalt road construction - Tar road construction". Retrieved 31 July 2013.
- Emery Mayor, Danielle. "Docteur Goudron était valaisan" (PDF). Histoire et Traditions. Retrieved 31 July 2013.
- "Brig Belalp tourism - Guglielminetti monument". Retrieved 31 July 2013.
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