Eric Walker added Blacksmithing : Forging a Hudson Bay Pattern Camp Axe - The Forge - YouTube to Craftsmanship and artisanship and Iron

Eric Walker added The Romans Called it ‘Alexandrian Glass.’ Where Was It Really From? - The New York Times to a number of topics

Eric Walker added Mechanical oscillations cause iron to become transparent to gamma rays – Physics World to Gamma rays and Iron

Eric Walker added We Now Have Proof a Supernova Exploded Perilously Close to Earth 2.5 Million Years Ago to 60Fe, and added 60Fe to Iron

Eric Walker added Siderite, Limonite and Bog iron and Collections: Iron, How Did They Make It? Part I, Mining – A Collection of Unmitigated Pedantry and China's reliance on Australian iron ore is a 'strategic weakness' for Xi Jinping, expert says - ABC News to Iron ores, and added Iron ores to Mines and mining and Iron

Eric Walker added Study of More Than 1 Million People Finds Intriguing Link Between Iron Levels And Lifespan to Serum iron, and added Serum iron to Blood and Iron

Eric Walker added Pyrite to Iron sulfide, and added Iron sulfide to Sulfur, Minerals and gems and Iron

Eric Walker added a number of topics and a number of links to Iron, and added Iron to Metals and Chemical elements

Eric Walker added a number of topics and We found a new type of stellar explosion that could explain a 13-billion-year-old mystery of the Milky Way's elements and Is It Time to Upend the Periodic Table? - The New York Times to Chemical elements, and added Chemical elements to Chemistry and Atoms, molecules, chemicals, minerals, materials and compounds

Eric Walker added a number of topics to Iron oxides, and added Iron oxides to Oxidation and oxides, Minerals and gems and Iron

Eric Walker added a number of links to Iron Age, and added Iron Age to Archeology, Society, culture, cultures, civilization and civilizations and Iron

Eric Walker added a number of topics and a number of links to Metals, and added Metals to Atoms, molecules, chemicals, minerals, materials and compounds