How did Henri Moissan produce chemically pure molybdenum in 1895?

In 1895, the French chemist Henri Moissan successfully produced the first chemically pure molybdenum metal, achieving a purity of 99.98 percent. He accomplished this by reducing the metal with carbon inside an electric furnace, a device he had developed in 1892 to vaporize substances previously considered infusible and to synthesize new compounds. This breakthrough was significant, as it enabled subsequent scientific and metallurgical research into the properties of molybdenum and its various alloys.12