| BITUMEN | Inflammable material such as petroleum or asphalt (7) |
| MINERALOIL | Hydrocarbon extracted from rocks, such as petroleum |
| REFINES | Purifies, as petroleum |
| CERAMIC | Material such as clay hardened by heat, used as the basis of china, porcelain or earthenware (7) |
| PADDING | Soft material such as foam or cloth used to stuff something (7) |
| TROWELS | Hand tools for lifting loose material (such as grit), and comprising handles and curved blades (or scoops) (7) |
| BALLAST | Heavy material such as gravel or sand placed in a ship's bilge to ensure its stability (7) |
| CRYSTAL | Clear material such as quartz |
| ROOFING | Materials such as slates or tiles |
| COLLAGE | Artwork composed of various materials such as photographs and pieces of paper or fabric |
| CALCIUM | White crystalline compound of which materials such as chalk and limestone are chiefly composed (7) |
| STABILE | Fixed free-standing abstract art construction typically composed of materials such as wire, sheet metal and wood (7) |
| NAPHTHA | Volatile, inflammable solvent derived from petroleum or coal-tar |
| MATCHED | Piece of inflammable material journalist made harmonious (7) |
| REFINER | Worker with petroleum or sugar |
| TAPE | Thin strip of material such as linen, cellulose or webbing for bookbinding, crafting or sewing; or, a ribbon across a finish line (4) |
| CHISEL | Cutting tool with a sharpened edge at the end of a metal blade, used-often by driving with a mallet or hammer-in dressing, shaping, or working a solid material such as wood, stone, or metal. (6) |
| GLASS | Material such as "lead crystal" developed by George Ravenscroft; a barometer, lens, mirror, tumbler or watch face; or, greenhouses and cold frames collectively (5) |
| AGGREGATE | Material such as sand or gravel, used with cement and water to make concrete, mortar, or plaster (9) |
| METAL | Material such as gold, iron, copper or aluminium (5) |
