An old antique coal mining safety lamp with an electrical flame. These flames used to die or change colour in the presence of dangerous gasses furthermore this lamp was the only means of lighting workers had before batteries were invented and this lamp wo

İlgili Anahtar Kelimeler

antika, kömür, tehlike, patlama, yangın, ateş kırmızısı, ücretsiz, gasses, altın, yağ lambası, ışığın kırılması, maden ocağı, romantic, güvenlik