a fenced off area and poison warning sign at the robinson dam in randfontein, south africa which is highly toxic due to years of acid mine drainage. - 硫酸 個照片及圖片檔
workers are mining the sulfur in the middle of sulfuric acid smoke at kawah ijen, indonesia. - 硫酸 個照片及圖片檔廢氣
photographer in red jacket take a shot of photo on mt bromo volcano mountain peak, east java , indonesia - 硫酸 個照片及圖片檔
photographer standing at another peak of moutain that can see mt bromo volcano , batok and sumeru in the background - 硫酸 個照片及圖片檔
mount bromo volcano during dawn in bromo tengger semeru national park view from mount penanjakan, east java, indonesia - 硫酸 個照片及圖片檔
Stripping bark from oak trees mixed with copperas it was used as a black textile dye. It was also used for tanning leather.
