Need for blacks and mulattos to work in the mines of Mexico
Need for blacks and mulattos to work in the mines of Mexico
Black Trade in Cuba
Complete dossier for the establishment of an ironworks in the Spanish colony of the Philippines
The General Answers of the Cadastre of the Marquis de la Ensenada constitute the oldest and most exhaustive survey available on the towns of the Crown of Castile in the mid-18th century.
The image shows the layout of one of the twelve reverberatory furnaces for quicksilver metallurgy that were built in the Calle de Santa Ana of the Real de minas de Azogue de Nuestra Señora de la Concepción in New Spain. These furnaces were made on the outside of brick and lime, to resist water, and on the inside of brick and clay, to preserve the fire. The picture explains how they worked.
Print from the memoirs of Antoine de Jussieu. Aludel furnace and equipment for the distillation of mercury used in the Almadén mines.