11.   Practical metallurgy began with necklace beads and hammered ornaments and progressed, after a long interval, to knives and other weapons.

12.   That is an unreasonably long interval.

13.   They say the pay system proposed by the industry would result in career-threatening overexposure, while failing to compensate them for the long intervals between jobs.

14.   A long QT interval raises the possibility of dangerous irregular heartbeats.

15.   Russian artillery fired at the city at long intervals Saturday -- a sharp contrast to the relentless shelling of previous days.

16.   The court cited the long interval between the crimes and the trial in imposing the lower sentence.

17.   The Ravensburg court cited the long interval between the crimes and the trial in imposing a sentence short of the life imprisonment sought by prosecutors.

18.   While more bodies were found in the same area the next seven years, long intervals between discoveries held down hysteria over a possible serial killer.