11.  Over millions of years the acidic water ate huge holes in the reef, which in cross section must look like a sponge.

12.  The acidic water, they say, is more a scientific curiosity.

13.  The brook trout, normally a fragile species, survive better in the acidic waters of the Millers than many other species, Flagg said.

14.  The mine tunnels, he said, can leak highly acidic water harmful to human health and to fish and other aquatic life.

15.  The valley is sparsely populated, and so far the biggest complaint of farmers has been that the acidic water has corroded their irrigation equipment.

16.  Those lakes, he said, contained acidic water and high levels of vegetation.

17.  When rapid melting occurs, large amounts of acidic water quickly run off from shrinking snowpacks.

18.  Dr Lo stressed that only consumption of mass quantities of the acidic water would cause serious health problems.

19.  Federal scientists have called the highly acidic water coming from the Iron Mountain Mine the worst in the world.

20.  Torrents of acidic water and tailings spewed into Guadiamar River and the nearby Rio Agrio, a seasonal watercourse in the semi-arid region of southern Spain.