Is this OreDict abuse?

I want to get a list of ores, but I couldn't find an easy way, so...

        ores = new ArrayList<Block>();
        String[] oreNames = OreDictionary.getOreNames();
        for (String oreName : oreNames) {
            if (oreName.startsWith("ore")) {
                ItemStack ore = OreDictionary.getOres(OreDictionary.getOreID(oreName)).get(0);
                Block oreBlock = Block.getBlockFromItem(ore.getItem());
                if (oreBlock != Blocks.air && oreBlock.renderAsNormalBlock()) {
                    ores.add(oreBlock);
                }
            }
        }

Is this code abusing OreDict? And should I bother checking if it's a solid block?

Thanks!