They continued to operate successfully and well into the 1950s.
The service was opened as planned and is operating successfully.
It operated successfully for about 18 years and then closed down.
Our own facility has been operating successfully for more than five years.
The school continued to operate successfully over the coming decades.
That the two are now starting to operate successfully together could mean better times ahead for both of them.
Similar funds have operated successfully at state and local levels for a long time.
It began operation in 1964, and has been successfully operating since that time.
That, in effect, is how much money a business can pay out to its owner and still operate successfully.
Otherwise they would not have successfully operated for so long.