The boundary between the Copper and Bronze Ages is indistinct, since alloys sputtered in and out of use due to the erratic supply of tin.

In fact, the erratic supplies of kerosene and LPG make it impossible for many middle-class families to rely on one source of energy.

Investors cite erratic supplies of electricity, the cavalier attitudes toward contracts, a small domestic market and bureaucratic paralysis.

You won't end up with a complete embargo, but an Iranian economy where it's already hard to fill your gas tank reliably will now face even more erratic supplies if the Americans pursue this as aggressively as they're signalling.

But the temptation of wind is large-the US has wind resources to cover 23 times its current electric use-and that has led to many ideas about how best to deal with the erratic supply.

Transworld, which is still at the discussion stage with Dillons, hopes the system will overcome what it has found to be 'erratic supply in Dillons', says marketing director Larry Finlay.

Designed to use a constant supply of clear lake water for steam and for cooling, the plant could not run on erratic supplies of muddy Colorado River water, he said.

My experiences with the erratic supply of tubes over the last two years were shared for the benefit of those Guitarist readers who might not know as much as Hartley Peavey.

With the electrical supply often erratic, they sometimes find that there is no electricity when they reach the pump.

Yet, some SSIs still face the problems of erratic supply of power and report that power tariff is high in the State.