Moelwyn Hughes's official report recommended more rigorous control of crowd sizes.

"In the European Union there are some very rigorous controls on groundwater pollution."

It also features rigorous control of dissolved and free small bubble gas content.

Under the more rigorous controls of Section 112, mercury emissions would have been reduced to about five tons a year, according to the lawsuit.

The boards need more rigorous financial control and auditing.

Without rigorous and forthright control, there can be no accomplished goals for the State.

The mining activities are under rigorous environmental and other controls.

He would have to draw conclusions without the rigorous controls required for scientific evaluation.

They knew the nature of Warner's inclinations, for all his ceaseless, rigorous control.