 kindhi vatilo prathi okkati muulakaalu ledha khanijaluga vargeekarinchandi :  oksygen ,  cobalt ,  phosphorous ,  naitroojan ,  graphite ,  quartz ,  corbon mariyu kley .
 oksygen ,  cobalt ,  naitroojan mariyu corbon muulakaalu .  bhaswaram ,  graphite ,  quartz mariyu matti khanijalu .