> The auto heavy sieve with 1 compressed gravel;
> 1 coal
> 1 broken iron ore
> 2 broken tin ore
> 1 broken lead ore
> Used 8080 RF
> The auto sieve with 9 gravel;
> 1 broken yellorium ore
> 1 flint
> 1 broken gold ore
> 1 broken iron ore
> Used 72720 RF
> Dropping the hammerer and compressor part, the auto heavy sieve uses way less energy and has about the same output.