Because of the malleability of lead, these sheets can be shaped closely to awkward shapes, such as the junction of a sloping roof and a chimney, without the need for the sheet to be cut. Cuts in the sheet would create a potential leak site. Copper is also used for this purpose as it is also durable and malleable.
A number of factors increase the risk of developing grand mal seizures. Not all people with risk factors will get grand mal seizures. Risk factors for grand mal seizures include: 1  Family history of certain genetic conditions. 2  Family history of epilepsy. 3  Recent brain surgery. 4  Recent head injury. 5  Recent infection of the brain.
Like other kinds of seizures, they are caused by abnormal activity in a personâs brain. You may also hear people call absence seizures petit mal (âPUH-tee mahlâ) seizures, although that name is not common anymore. There are two types of absence seizures:1  Simple absence seizures: During a simple absence seizure, a person usually just stares into space for less than 10 seconds. 2  Complex absence seizures: During a complex absence seizure, a person will make some kind of movement in addition to staring into space.ike other kinds of seizures, they are caused by abnormal activity in a personâs brain. You may also hear people call absence seizures petit mal (âPUH-tee mahlâ) seizures, although that name is not common anymore. There are two types of absence seizures: