Its inventor was sure of it. Facing sceptical reporters at a press conference in October 1924, Thomas Midgley dramatically produced a container of tetraethyl lead - the additive in question - and ...

Don’t be afraid to get the big boys in and pound the rock in the “Split T Tight” formation with plays like “HB Lead” and “DIY ...

Put a known volume of water into a boiling tube. Add soap solution, one drop at a time, and shake the mixture for 10 seconds. Record the number of drops of soap needed to make a lather. The ...

Lead-free solder alloys have been around for as long as people have done soldering, with sources dating back about 5,000 years. Most of these alloys were combinations like copper-silver or silver ...

Therefore, job owner and architect specifications often vary and can lead to costly disputes ... Use the “finger test” to determine the hardness or readiness of the surface.

That’s less than two cents per child poisoned by lead. Thankfully, that number has just increased dramatically. Amid the UN General Assembly meeting in New York last week, the US Agency for ...

Sodium carbonate, Na 2 CO 3, is also known as washing soda. It can soften water that has temporary hardness and it can soften water that has permanent hardness. It is an inexpensive method of ...

The Daily Pilot’s e-newspaper includes Sunday’s coverage of Newport Beach, Huntington Beach, Costa Mesa, Laguna Beach, Fountain Valley and other parts of Orange County. The Daily Pilot’s e ...

An elementary school in Alexandria will be closed through Tuesday and the city health department is recommending that students, faculty and staff get blood tests after officials said lead was ...

Gov. Gavin Newsom has signed a bill prohibiting local governments from requiring voter identification at polling places, a new law that is squarely aimed at Huntington Beach. In response ...

Those chains aren't long enough that you would feel, but when they bind together hardness they want to get to the surface ... can drastically reduce the amount of scum created and so lead to an ...