I don't know who brought it in for the United States, but it was in the early 1990s. It's really effective. It's cutting down on acid rain, but it hasn't stopped acid rain.
President, Sackville Rivers Association
I don't know who brought it in for the United States, but it was in the early 1990s. It's really effective. It's cutting down on acid rain, but it hasn't stopped acid rain.
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