But with the advent of reinforced concrete, the demand for bricks dropped off. This was exacerbated by the growth in interest in environmental conservation, and to protect the area's soil and water resources, excavation at Mt. Pakua was scaled back, forcing kiln after kiln to shut its doors.
只是後來鋼筋混凝土建材的風行，磚塊需求量降低，加上水土保持聲浪興起，及環保意識抬頭，八卦山限制開挖，磚窯廠一家家倒下。