Instruction and study (1) Education (1) Economic conditions (1) Assaying (1) Mineral rights (1) Labor market (1) Labor demand (1) Strategy (1) Spleen (1) Quality of life (1) Paradoxes (1) Paradox (1) Morale (1) Mining claims (1) Lifestyles (1) Labor supply (1) Girls (1) Emotions (1) Cost and standard of living (1) Concord (1) Boys (1) Sounds (1) Women (1) Analysis (1) Rates (1) Population (1) Practice (1) Marriage (1) Infancy (1) Experiments (1)