Jean Baptiste Boussingault
Jean-Baptiste Joseph Dieudonné Boussingault (2 February 1802 – 11 May 1887) was a French chemist
A chemist is a scientist trained in the study of chemistry. Chemists study the composition of matter and its properties such as density and acidity. Chemists carefully describe the properties they study in terms of quantities, with detail on the level of molecules and their component atoms...

 who made significant contributions to agricultural science, petroleum science and metallurgy.
Jean-Baptiste Boussingault - an agricultural scientist and chemist of importance - was born in Paris. After studying at the school of mines
Mining is the extraction of valuable minerals or other geological materials from the earth, from an ore body, vein or seam. The term also includes the removal of soil. Materials recovered by mining include base metals, precious metals, iron, uranium, coal, diamonds, limestone, oil shale, rock...

 at Saint-Etienne
Saint-Étienne is a city in eastern central France. It is located in the Massif Central, southwest of Lyon in the Rhône-Alpes region, along the trunk road that connects Toulouse with Lyon...

 he went to Alsace to work in the asphalt mines - a two year interlude that was to shape his contributions to science.