The vacuum tube in a CRT can implode if it is broken or punctured. The surrounding air will rush violently into the unsealed vacuum in the CRT, spraying broken glass in every direction. Color CRTs may contain mercury or other potentially toxic materials.
Instructions. Build a hearth for a fireplace that is 16 inches deep, according to This Old House writer Harry Sawyers. This is the standard requirement for municipalities and homeowner associations. The hearth should also extend a minimum of eight inches on either side of the fireplace.
Chop the wood in readiness for storage. It's best to get the pieces down to no more than 6-8 inches (15cm-20cm) in diameter. Eighteen inches (45cm) long is a common size, though 16 inches (40cm) is the correct length for a face cord and will fit better in smaller stoves.reshly chopped firewood has up to 50% water content and won't burn in your fireplace. First, you must let the firewood season (dry), which allows the moisture to escapeââthe drier the wood, the cleaner the burn.