These utilities searched for either an alternative supply or an inexpensive treatment method to remove the arsenic from their water.

Only in very recent years have people begun to explore the potential commercial uses for this vast, alternative supply of timber.

In this case, the strategic plan would call for an alternative supply chain or alternative materials in the event of a breakdown in the current supply chain.

Because vital tissues such as the brain or heart muscle are vulnerable to ischaemia, arteries often form anastomoses to provide alternative supplies of fresh blood.

Neither alternative supplies what the notion of free will requires, and no other alternative suggests itself.