Goussault, as it happens, was working along the same lines, but at an industrial level.

By 1900 the city had more than 3,000 oil wells, of which 2,000 were producing oil at industrial levels.

Although most grow lights are used on an industrial level, they can also be used in households.

By 1910, these too were being developed at an industrial level.

On every level, governmental, military and industrial, major downsizing will continue at least the rest of this year.

On the industrial level, natural gas also burns more cleanly than coal and oil.

If all the world had the agricultural and industrial levels of the developed countries, that growth might be manageable.

When I evacuated, they were incapable of such a development at their industrial level.

Countries which did not aim low on an industrial level are now among the global leaders when it comes to trade.

I've dropped down to the first industrial level.