Molten-lead gas been poured on to them, as well as Kiefer's more conventional materials such as broken glass and dried plants.
Dominic has led gas and power business development in the UK and northern Europe, as well as running power and utility assets at BP industrial sites.
Fixing the recalled vehicles will involve inserting a steel reinforcement bar to reduce the friction that led gas pedals to become increasingly unresponsive or, in some cases, stuck.
Catalytic converters and no-lead gas provided a reasonable fix.
The strongly reducing nature of permeable reactive barrier (PRB) treatment materials can lead to gas production, potentially resulting in the formation of gas bubbles and ebullition.
In post-combustion, flue gases formed by combustion of fossil fuels in air lead to gas streams with 3 20% CO2 in nitrogen, oxygen, and water.
Oil companies began adding lead to gas in the 1920's as a cost-effective way to increase fuel octane and thus control engine knock.
Meanwhile, the list of countries that still use lead in gas — Afghanistan, Serbia and Iraq, as well as much of North Africa and Central Asia — does not rule out a connection with violence.
Reasonable cases can be made for causes as varied as "broken windows" policing and the end of lead in gas fumes.
All three configurations lead to gas supply costs in the same order of magnitude.
