/c local surface = game.player.surface
for c in surface.get_chunks() do
for key, entity in pairs(surface.find_entities_filtered({area={{c.x * 32, c.y * 32}, {c.x * 32 + 32, c.y * 32 + 32}}, name= "rock-big"})) do
entity.destroy()
end
end

for c in surface.get_chunks() do
for key, entity in pairs(surface.find_entities_filtered({area={{c.x * 32, c.y * 32}, {c.x * 32 + 32, c.y * 32 + 32}}, name= "rock-huge"})) do
entity.destroy()
end
end

for c in surface.get_chunks() do
for key, entity in pairs(surface.find_entities_filtered({area={{c.x * 32, c.y * 32}, {c.x * 32 + 32, c.y * 32 + 32}}, name= "sand-rock-big"})) do
entity.destroy()
end
end