This Act shall apply—
(a)in the case of the plundering, damage, or destruction of any ship or boat stranded or in distress on or near the shore of any sea or tidal water, or of any part of the cargo or apparel of such ship or boat, by persons riotously and tumultuously assembled together, whether on shore or afloat; and
(b)in the case of the injury or destruction, by persons riotously and tumultuously assembled together, of any machinery, whether fixed or movable, prepared for or employed in any manufacture, or agriculture, or any branch thereof, or of any erection or fixture about or belonging to such machinery, or of any steam-engine or other engine for sinking, draining, or working any mine or quarry, or of any staith or erection used in conducting the business of any mine or quarry, or of any bridge, waggonway, or trunk for conveying minerals or other product from any mine or quarry;
in like manner as if such plundering, damage, injury, or destruction were an injury, stealing, or destruction in respect of "which compensation is payable under the foregoing provisions of this Act, and as if, in the case of such ship, boat, or cargo not being in any police district, such plundering, damage, or destruction took place in the nearest police district.