Home : Our Work : Green Playces Initiative : Green Playces: Munhall Green Playces: Munhall Share this project Grounded continued our partnership with Propel Schools by partnering with Propel Andrew Street High School in Munhall, PA. In Spring of 2016, we installed a brand new, 8 ft by 16 ft greenhouse, performance stage, and garden beds. Students in 9th grade science classes at the high school will be using the space for various horticulture experiments, outdoor performances and more!