Original sentence: In today's modern mining environment, it is easy to find mining operators continuing to engage in tailings storage methods that are not environmentally friendly.Non-environmentally friendly methods (see "Storage Methods" below) are the method of the day
Edited sentence: For a very small percentage (less than 1%) of current operations, and a much higher percentage of historic operations, these groups have a valid point.In the past, non-environmentally friendly methods (see "Storage Methods" below) were the method of the day.In today's modern mining environment, it is difficult to find mining operators continuing to engage in tailings storage methods that are not environmentally friendly, but these operations do exist.The bulk of these operations tend to exist in developing nations where legislative requirements are more permissive than in industrialized countries, as these developing countries want the same economic advantages the developed countries have (and obtained without the stringent environmental legislation that these developed countries want to impose on the developing countries)