Without liquid helium, another and more expensive means of evacuating the beam tube would have to be developed.

It's slow work, given the nature of the contamination and the complicated, expensive means of removing it.

But that is not an easy fix, because pipelines - the least expensive means for shipping fuels between regions - are already full.

People think antique means expensive and elitist, but Joan is selling antiques for everybody.

Family First views injecting rooms as an expensive and ineffective means of responding to those with drug addictions.

Fiber-optic cables are a flexible, robust and expensive means of transmission.

Aluminium takes a huge amount of energy to produce and is an expensive means of packaging.

Sometimes a few words from home came to cheer the hearts of the exiles, and could be returned by the same uncertain and expensive means.

Salad became serious, and expensive, a means to reconnect with the earth we had so long been ignoring.

What is the least expensive means of transporting cargo?