Achieved 50% Greenhouse Gas Emissions (GHG) Goal Seven Years Ahead of SchedulePITTSBURGH, June 26, 2024 /PRNewswire/ -- Koppers Holdings Inc. (NYSE:KOP) today published its 2023 Corporate Sustainability Report (CSR). The report provides a detailed summary of the company's progress in carrying out its long-term Sustainability Plan, underpinned by its values of People, Planet, and Performance.Notable highlights from 2023 include:Koppers 2023 Corporate Sustainability ReportAccomplishing our 2030 goal of a 50% ...