A secondary or supporting stroke center may not meet all of the requirements of. a Primary Stroke Center (PSC) to deliver acute stroke treatment capability 24/7. but must meet all of the following requirements and submit a plan that.
The most common causes of subsidence are as follows: 1. Settlement of old mine workings, often at great depth, resulting in damage to structures on the surface. These may often be a long way from the cause of the damage. Access shafts are notoriously difficult to identify as mine operators rarely kept good records of these points. 2. Damage to subsoils caused by water flowing through them. This may be from naturally occurring ground water or leaking drains and water mains.
The central area of subsidence usually is subjected to a gradual lowering, possibly suffering some tilt and strain as the workings pass beneath. This may cause damage to such items as roads and pipelines but this is easily repaired and there is little evidence of it being a subsidence area after movement ceases.