The aim of this dissertation is to explore gendered work in the intersection of geological occupations and work organizations, particularly within the masculine organizations of the mining industry. By exploring processes and practices of gendering in work, the dissertation examines how gendered work can be understood in geoscience and geological occupations, and within academic and industrial organizations. The dissertation rests on four studies differing in empirical focus and methods. Through a systematic literature review on gender in mining, the gendered characteristics of mining organizations are explored, adding empirical and theoretical context to the dissertation’s aim. It also identifies a research gap regarding how middle-class occupations in mining organizations can be understood in relation to the gendered practices and processes of male-dominated organizations. In the second study, a European-wide survey of women professionals in geoscience is presented in relation to the concept of gendered work as ‘hard work’. The study concludes that women in geoscience experience othering in their work organizations, expressed through narratives of hard work that encompass four distinct processes of subordination: making one’s work visible and valued; compensating for actual or assumed family responsibilities; proving physical capacity and managing gendered bodies; and building and maintaining certain relations while avoiding others. Hard work as gendered work is primarily understood as the social (rather than productive) work required to succeed as a woman in the masculine work cultures of academia and mining. The third study introduces two types of geoscience organizations, academic and industrial, as perceived organizational arenas of gendered power structures and positions. Through a workshop series conducted in 16 national contexts across Europe, women in Geoscience occupations mapped their work organizations in relation to occupational positions, gendered characteristics (masculine, feminine, neutral) and perceived placement in organizational hierarchy. The study demonstrates how male dominance permeates geoscience work organizations with masculine positions centered in top hierarchical positions while feminine and neutral positions are concentrated in low and mid-level positions of organizational hierarchy. The study concludes that positions in industrial organizations are perceived as more gendered (as either masculine or feminine) the more power is ascribed to a position. As such, expert positions in mid-level organizational hierarchy are perceived as more gender neutral, indicating possible openings and variations in relation to how gender is enacted in expert positions in male-dominated industries, particularly mining. In the final study of the dissertation, the expert position of geologists working within a mining organization in the Nordics is studied through interviews and ethnographic fieldwork. By exploring how gender is done within a working group of mining geologists, the study demonstrates how the inequality regime of the mine shapes geological work in relation to occupational gender regimes of geoscience professions. Specifically, the study demonstrates how class and gender intersect through middle-class gendered ideals of work-family balance and organizing practices enabling reproductive work. As a general contribution, the dissertation demonstrates how analyzing gendered organizations from the perspective of occupation contributes with a positional understanding of gendered practices and processes in organizations and how male-dominance and masculine culture may exist as dominant structures yet be contested and challenged through the classed privilege of certain occupations.