Everything proving satisfactory, this working was continued for the next 20 years.
Many changes were proposed, but, none proved satisfactory to all parties.
In each case it proved satisfactory and he was passed.
Production of the new class began in 1985 after 243 001 had proven satisfactory during her trial period.
Trials proving satisfactory, the type went into production and service.
This trial run was first in a series of five which proved satisfactory.
In 1867 they designed an original "hot air" engine, which did not prove satisfactory.
But the signal proved satisfactory; it was the word to go.
Initial tests took place in September 1944 and proved satisfactory.
This meeting of the two parties proved highly satisfactory, and decided the whole business at once.