Pérez de Perceval Verde, M. Ángel, Martínez Carrión, J.M. and Martínez Soto, Ángel P. 2022. Biological Welfare and Inequality During the Mining Boom: Rio Tinto, 1832-1935. Revista de Historia Industrial — Industrial History Review. 25, 64 (Feb. 2022), 149–181.