Metamorphic rocks arise from the transformation of existing rock types, in a process called metamorphism, which means change in form. The original rock (protolith) is subjected to heat (temperatures greater than 150 to 200 Â°C) and pressure (1500 bars), causing profound physical and/or chemical change.extures are separated into foliated and non-foliated categories. Foliated rock is a product of differential stress that deforms the rock in one plane, sometimes creating a plane of cleavage. For example, slate is a foliated metamorphic rock, originating from shale.
Thereâs no time limit for how long the period of consultation should be, but the minimum is: 1  20 to 99 redundancies-the consultation must start at least 30 days before any dismissals take effect. 2  100 or more redundancies-the consultation must start at least 45 days before any dismissals take effect.
By Eskridge Law. Last month's bulletin addressed the need to retain various employee records. Since we received a couple e-mails asking how long these records must be kept, we thought that would be a good topic for this month's bulletins. Naturally, there is no single answer.The length of time you must keep the records depends on the type of records involved.he FMLA requires the retention of certain records with respect to payroll and demographic information as well as information related to the individual employee's leave of absence for three years. : OSHA requires that records of job-related injuries and illnesses be kept for five years.