Osmium is resistant to boiling Aqua Regia (this time with 37% HCl) The Osmium Channel 1:27 1 year ago 1 876 Далее Скачать
OSMIUM - The rarest and DEADLIEST precious metal! KickAss Science 3:55 1 year ago 572 152 Далее Скачать
But seriously, don't drop Sodium in gasoline Action Lab Shorts 0:46 1 year ago 7 393 588 Далее Скачать
#shorts #ytshorts |adding and separation of gold with mercury |professional gold Smith | Visalakshi Pasumarthi VLOGS 0:51 3 years ago 282 755 Далее Скачать
A Toxic but Easy Way to Remove Quartz Off Gold Vo-Gus Prospecting 6:03 2 years ago 55 972 Далее Скачать