Probably the most significant activity having impact on OHV recreation ever to happen is the current effort by the BLM to develop a National Off-Highway Vehicle Management Strategy.
(impact on OHV recreation; to happen; T:ever) (Probably the most significant activity having impact on OHV recreation ever to happen; is; the current effort by the BLM)
impact on OHV recreation Probably the most significant activity having impact on OHV recreation ever to happen
to happen is
T:ever
the current effort by the BLM