| SILVER | This mineral has the highest known electrical and thermal conductivity of all metals. It's used in fabricating printed electrical circuits and as a vapour-deposited coating for electronic conductors. |
| AG | A soft white precious univalent metallic element having the highest electrical and thermal conductivity of any metal. |
| METAL | Any of a class of substances characterized by high electrical and thermal conductivity as well as by malleability, ductility, and high reflectivity of light. |
| EVEREST | The highest known mountain in the world |
| AGE | 122 is the highest known one for a human |
| IRON | This metal makes up 5 percent of Earth's crust and is second in abundance to aluminum among the metals. The average quantity of this mineral in the human body is about 4.5 grams (about 0.004 percent), |
| IRIDIUM | Chemical element in the platinum group, atomic number 77; the most corrosion-resistant of all metals (7) |
| TUNGSTEN | A shiny, silvery-white metal that has the highest melting point of all metals (8) |
| DAVINCI | Artist of both the painting with world's highest known sale price and the painting with world's highest insurance value, as of 2021 |
| PLATINUM | A very heavy, precious, silver-white metal, this mineral is soft and ductile and has a high melting point and good resistance to corrosion. Compared to other popular precious metals, this mineral is v |
| CAESIUM | The softest of all metals with a consistency of wax at room temperature (7) |
| GYPSUM | Which mineral has been mined in the Kingscourt area since the 1930s? (6) |
| ARTIFICER | A soldier of the Royal Electrical and Mechanical Engineers selected for special electro-mechanical training and rapid promotion to the rank of Staff Sergeant |
| GOLD | A dense lustrous yellow precious metal durable to the point of virtual indestructibility, highly malleable, and usually found in nature in a comparatively pure form. This mineral is also a chemical el |
| TOPAZ | One of the top drawers in the chest will reveal this mineral! (5) |
| EMI | The Electrical and Musical Industries Ltd became better known as this recording giant (1,1,1) |
| LITHIUM | Lightest of all metals (7) |
| ELEMI | The Spanish electrical and musical industries produced material from The Tropical Tree (5) |
| PEWTER | An alloy of tin with antimony and copper, formerly lead; a beer tankard, jug, plate etc made of said metal; its bluish-grey colour; or, old slang for prize money (6) |
| ENERGY | From Greek for "work", one's pizzazz, vigour, zest or zip; or, a scalar quantity and quantitative property that can exist in forms including kinetic, potential and thermal (6) |
