Dropt.list("grave")
    .priority(0)
    .add(Dropt.rule()
        .matchDrops([<minecraft:gravel>])
        .matchHarvester(Dropt.harvester()
              .type("PLAYER")
              .mainHand("WHITELIST", [<gregtech:meta_tool:16>.withTag({"GT.ToolStats": {PrimaryMaterial: "darmstadtium"}})], "shovel;0;-1")
      )
	    .addDrop(Dropt.drop()
            .selector(Dropt.weight(50))
            .items([<minecraft:gravel>])	  
         )
        .addDrop(Dropt.drop()
		    .selector(Dropt.weight(35))
            .items([<pyrotech:rock>])
        )
	    .addDrop(Dropt.drop()
            .selector(Dropt.weight(15))
            .items([<minecraft:flint>])  
		)	
);