Oil and gas wastewater as dust suppressant less than ideal

At the least, wastewater from oil and gas drilling should be treated in a waste treatment facility before it is used on dirt roads to suppress dust or deice roads. At the best, affordable, nontoxic dust suppressants should ...

Wheelchair for developing countries designed by students

Muddy, unpaved roads and doors with high thresholds. Operating a wheelchair in a developing country is a challenge. In their degree project for Industrial Design Engineering, Chalmers students Erik Ohlson and Christian Bremer ...