But there is room for scholarly inquiry into the workingof the murky state machinery that led to that outcome to determine whether the tragedy was principally the result of murderous design or culpable neglect.
As a second-generation oilman, Zhang began working in 1990 for the First Machinery Factory of Huabei Petroleum Administration Bureau, a state oil subsidiary.
Under Barton's predecessor, Donald Fites, Cat squeezed its working capital in the machinery and engine businesses down to 10% of sales from 25% in 1991.
The signals that indicate where the copying machinery should start and stop, which is a good working definition of where on a chromosome a gene begins and ends, are imperfectly understood.