hire ▁and ▁South ▁Derby shire ▁Co al field ▁in ▁the ▁English ▁Mid lands ▁is ▁one ▁of ▁the ▁smaller ▁British ▁coal fields . ▁The ▁two ▁areas ▁are ▁sometimes ▁separately ▁referred ▁to ▁as ▁the ▁South ▁Derby shire ▁Co al field ▁and ▁the ▁Le ic esters hire ▁Co al field . ▁All ▁of ▁the ▁worked ▁coal ▁se ams ▁are ▁contained ▁within ▁the ▁Lower ▁and ▁Middle ▁Co al ▁Me asures ▁which ▁are ▁of ▁Upper ▁Car bon ifer ous ▁age . ▁ ▁Ge ology ▁The ▁following ▁se ams ▁are ▁recogn ised ▁in ▁South ▁Derby shire : ▁ ▁Middle ▁Co al ▁Me asures ▁ ▁Ell ▁ ▁Dick y ▁G ob ler ▁ ▁Upper ▁Kil burn ▁ ▁Block ▁ ▁Y ard ▁ ▁Two ▁Foot ▁ ▁Upper ▁C annel ▁ ▁Little ▁ ▁Little ▁Kil burn ▁ ▁Lower ▁Co al ▁Me asures ▁ ▁R ider ▁ ▁Main ▁ ▁Little ▁Wood field ▁ ▁Lower ▁Main ▁ ▁Wood field ▁ ▁Stock ings ▁ ▁E ure ka ▁ ▁Joy ce ' s ▁ ▁Upper ▁Stan ho pe ▁ ▁Lower ▁Stan ho pe ▁ ▁Well ▁ ▁Tw elve ▁In ch ▁ ▁Cl od ▁ ▁Kil burn ▁ ▁N orton ▁ ▁Hard bed ▁Band ▁ ▁Bel per la wn ▁ ▁A ▁series ▁of ▁se ams ▁referred ▁to ▁as ▁P 1 2 , ▁P 1 5 / 1 6 , ▁P 1 7 , ▁P 2 5 , ▁P 2 7 , ▁P 3 1 ▁( Der by ), ▁P 3 3 , ▁P 3 4 ▁and ▁P 3 9 / 4 0 ▁are ▁recorded ▁above ▁the ▁Upper