Appendix 1: The context codes

Categories of deposit applicable to both sites were established at an early stage of the project and slightly refined in the light of experience. The simple definitions as used for each site are set out in Colledge, Table 2 (Tell Brak) and Table 20 (Kilise Tepe), and in Baker, Table 2. These abbreviated headings are not in themselves sufficient to determine the attribution of each context to a class, and we give below the expanded version which was used to resolve doubtful or marginal cases. The sub-categories (e.g. 4a, 4b) were not generally used and are there to underline the range of deposits within each class.

1	Natural deposits - natural strata and deposits laid by natural agencies (e.g. wind, water, gravity)
2	Tip, midden, rubbish, dump (including single and repeated episodes)
3	Structure (i.e. brick, stone, mortar, plaster etc. of walls and other constructed features)
4	Construction materials ("packing, fill") a. sand, clay, hard-core, bricky rubble, bricks b. refuse deposits with high organic content c. destruction debris, in situ and recycled [note the distinction between this (debris deposited in room as part of or after destruction) and 6b (materials belonging in situ and subjected to destruction)]
5	Occupation sequence a. laid floor material b. occupational accumulation on floor c. combinations of a and b d. combinations of a and b and (their) associated packing layers
6	In situ deposits - primary contexts where the deposits of artefacts and other material may be off the end of the quantitative spectrum a. grave contents b. room contents (inc. items involved in destruction) c. fire installation fill
7	Pit fills a. residue from use of pit b. infill (striated accumulations) c. backfill (single episode, homogeneous)
8	Miscellaneous deposit type which cannot be put into 1-7
9	Mixed - units involving more than one of the above categories (and therefore of little use for our purposes)

Horizontal context codes (only used for Tell Brak)

	A	Unenclosed, unroofed space: rubbish disposal
	B	Unenclosed, unroofed space: craft activity
	C	Unenclosed, unroofed space: other
	D	Street or lane
	E	Within building(s): enclosed unroofed space ("courtyard")
	F	Within building: enclosed unroofed space, NOT courtyard
	G	Within building: reception room/"living" room
	H	Within building: kitchen
	I	Within building: corridor, passageway
	J	Within building: storage
	K	Within building: ritual space
	L	Within building: other rooms, or unspecified
	S	Surface operation
	W	Wall or similar structure
	X	Mixed, miscellaneous or uncertain