John F. Kennedy was the US president during the Cuban Missile crisis General Secretary of the USSR was Nikita Krushchev and Fidel Castro was the Cuban ruler involved in this â¦ crisis.
What is the metal used for most electrical wiring and water pipes? Copper is the most common metal used in electrical wires because it has a structure which includes freely-moving negatively-charged particles-called electrons-which are es â¦ sential for the conduction of electricity.
Copper Pipe Type L. Type L copper pipes are used on interior plumbing applications, fire protection and HVAC in some instances. Copper tubes of type L can be used with sweat, compression and flare fittings and it is available in hard and soft types.