Details of relevant entry in The Pottery Kilns of Roman Britain by Vivien Swan

As utilised in the website hosted by Oxford Archaeology on behalf of the Study Group for Roman Pottery

Site Name: N of Throlam Plantation (Pothill Kiln Group)

Kiln Number: Corder's kiln (final of at least 4 phases of superimposed kilns)

Grid Reference: SE82133555

County: YORKSHIRE: EAST RIDING AND YORK

Parish: HOLME UPON SPALDING MOOR (9)

Geology: wind-blown sand over clay

Situation: level

Height above OD: 4 m

Water Supply: water-level near surface

Circumstances of Record: limited excavation

Excavator/Observer: T Shepherd, P Corder and J L Kirk

Date of Record: 1930

Kiln Type: D?3: oval, cut into 'platform base' of solid clay (probably raw clay dumped into ground-surface or slight scoop, and impacted)

Kiln Interior: (c): 2 unequal, parallel, D-shaped pedestals, set close together on either side of flue-axis and probably cut out of clay 'platform base'

Oven Floor: no raised oven-floor probable; raised 'oven-floor' described by Corder lacked vent-holes and may probably be interpreted as furnace-floor of superimposed kiln-phase, but not as raised oven-floor of penultimate phase, reused as such

Flue: short, clay-lined flue

Site Features and Finds: kiln lay within waster-mound, 30 m diam and approx 2 m high (now much denuded)

Pottery: all phases: grey 'Throlam' ware flanged bowls and dishes (Gillam 229-331, 315), some with burnished wavy-line decoration on interior or exterior, large wide-mouthed bowls with everted rim and girth-grooves, S-shaped colanders and bowls, narrow-mouthed jars with handles and 'moulded' rims, large barrel-shaped cooking-pots with looped (not countersunk) handles, and jars (predecessers, in type, of Gillam 40/41)

Date of Pottery: 3/4

Reference(s): Corder 1932

Source of Information: OS Records

Location of Finds: Hull TA Mus

Comments: supposed 'chimney' at back of kiln may be the result of subsidence, relining and repair to S side of kiln: lack of symmetry in pedestals may also suggest that one was a replacement or a repair; the idea of a chimney reflects the influence of H Sumner's interpretation of his New Forest kilns, published shortly before work at Throlam (p.108) and now known to be erroneous