"Sqwertz" > wrote in message
...
> On Sun, 20 Sep 2009 10:19:12 +1200, Miche wrote:
>
>> Here's one.
>>
>> http://maps.google.com/maps?f=q&sour...=lake+grassmer
>> e+new+zealand&sll=-43.061583,171.774588&sspn=0.025178,0.055575&ie=UTF 8&t=
>> h&z=14&iwloc=A
>>
>> The salt is evaporated in open ponds and then refined in a nearby
>> factory.
>
> Almost all refined salt comes from mines, not ponds. A sea salt
> refinery only removes certain impurities, unlike mined salt which is
> purer.
>
> -sw

Mines that used to be seawater.