asbestos
lead
Although all wood will rot in due time but pine and oak will last longer
A steel specimen would give a longer or continuous sound when beaten by a hammer. This is due to the malleable nature of the material. In other words, sound takes longer to travel in a coarse-grained material. Whereas cast iron specimen gives sound of shorter duration. This is due to the brittle nature of the material. In other words, sound takes shorter to travel in a fine-grained material.
Great material for oil lines /natural gas /steam / hydronics / condensate /chilled water piping /air
The hollow spindle of a lathe allows for longer lengths of material to be held in the chuck thus eliminating constant material changing to and from the lathe in production turning. The best advantage is the saving in material costs. If one had to manufacture 20 bushings and they were all cut into separate billets, half of the material would be lost because the chuck needs some material to grip the work piece on. If for example 20 bushings of 50mm OD by 50mm long have to be made, one would need a piece of material of at least 1150mm long. A single shaft or hollow bar of this length can usually be stuck into the hollow spindle with only enough material sticking out to make one or two bushings at a time. Once they are parted off, the material can simply be pulled out and the next one or two bushings can be machined. In the end the wastage will only be a piece of material of 70mm long instead of 20 pieces of 40 or 50mm long without a hollow spindle.
Asbestos
Because of its carcinogenic effects, asbestos (fibers made from a natural mineral) is no longer used in most applications. It continues to present problems for workers involved in repairing or remodeling older structures.
lead
Asbestos (particularly blue asbestos)
Asbestos
Using warp-resistant wood in construction projects offers several benefits. It helps maintain structural integrity over time, reduces the need for frequent repairs or replacements, and ensures a more stable and durable end product. This type of wood is less prone to warping, twisting, or bending, resulting in a higher quality and longer-lasting construction.
The material that was use in the original construction is no longer available.
EVA, rubber tends to become slicker in the rain and against certain kinds of brick and concrete
Asbestos is a fire-resistant material that was commonly used in the past but is no longer used due to its carcinogenic properties. Exposure to asbestos has been linked to various health issues, including lung cancer and mesothelioma.
The obvious benefit of using a chlorine resistant swimsuit is that the swimsuit will last a lot longer. The chemicals in chlorine are strong and can often wear at the material of a bathing suit.
Rock lath plaster offers several advantages over other types of plaster for wall construction. It is more durable and resistant to cracking, providing a longer-lasting finish. Additionally, rock lath plaster is fire-resistant and can help improve sound insulation in a building. Its rough texture also provides a good surface for paint or wallpaper to adhere to.
Granite lasts longer as it is far more resistant to chemical weathering.