A hopper railroad car top hatch cover assembly for a hopper railroad car including a roof including an upwardly extending coaming, the hopper railroad car hatch cover assembly comprising: a hatch cover pivotally connectable on one side of the coaming and including a movable hatch pivotally movable from a closed position engaging the coaming to an open position disengaged from the coaming; and a hatch cover securer movably connectable on an opposite side of the coaming and including a hatch cover engager movable from a hatch cover engagement position in which the hatch cover engager secures the movable hatch in the closed position engaging the coaming to a hatch cover non-engagement position in which the hatch cover engager allows the movable hatch to move to the open position, characterized in that the hatch cover securer includes: a plurality of engager supporting arms (1402,... 1428), a plurality of elongated first hatch engagers (1432,..., 1444) connected to and extending between respective engager supporting arms (1402,... 1420), a hatch cover engager rotator configured to pivot the plurality of elongated first hatch engagers (1432,..., 1444) from respective hatch cover engagement positions to hatch cover non-engagement positions, and a first and second actuator (1600, 1700) connected to the hatch cover engager rotator and configured to move the hatch cover engager between the hatch cover engagement position and the hatch cover non-engagement position. a hatch cover pivotally connectable on one side of the coaming and including a movable hatch pivotally movable from a closed position engaging the coaming to an open position disengaged from the coaming; and a hatch cover securer movably connectable on an opposite side of the coaming and including a hatch cover engager movable from a hatch cover engagement position in which the hatch cover engager secures the movable hatch in the closed position engaging the coaming to a hatch cover non-engagement position in which the hatch cover engager allows the movable hatch to move to the open position, characterized in that the hatch cover securer includes: a plurality of engager supporting arms (1402,... 1428), a plurality of elongated first hatch engagers (1432,..., 1444) connected to and extending between respective engager supporting arms (1402,... 1420), a hatch cover engager rotator configured to pivot the plurality of elongated first hatch engagers (1432,..., 1444) from respective hatch cover engagement positions to hatch cover non-engagement positions, and a first and second actuator (1600, 1700) connected to the hatch cover engager rotator and configured to move the hatch cover engager between the hatch cover engagement position and the hatch cover non-engagement position. a plurality of engager supporting arms (1402,... 1428), a plurality of elongated first hatch engagers (1432,..., 1444) connected to and extending between respective engager supporting arms (1402,... 1420), a hatch cover engager rotator configured to pivot the plurality of elongated first hatch engagers (1432,..., 1444) from respective hatch cover engagement positions to hatch cover non-engagement positions, and a first and second actuator (1600, 1700) connected to the hatch cover engager rotator and configured to move the hatch cover engager between the hatch cover engagement position and the hatch cover non-engagement position.