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[[on reverse of previous page]]

[[image - drilling schematic, showing geological strata encountered during drilling the borehole. 
Portrayed as a table]]

[[4-column table]]

1232 | [[repeated line drawing of bricks and ovals]] | } 1232-1246 | hard porous ls. (See core 3)
1240 | [[repeated line drawing of bricks and ovals]] | }
     | [[line drawing of dots with horizontal hyphens]] | } 1246-1248 | soft ls. apparently where circulation lost.
1248 | [[jagged horizontal line]] | | [[arrow pointing to "(See core 3)" above]]
1256 | [[repeated jagged horizontal lines]] | } 12-48-1260 | Extremely cavernous. Drill drops 1 to 3 feet at a time with 1 foot of sufficient formation to retard drill.
     | [[line drawing of dots with horizontal hyphens]] | } 1260-1264 | firm ls but easy to drill
1264 | [[repeated line drawing of bricks]] | 1264-1272 | hard ls. chatters kelly. (probably porous)
1272 | __ | } |

[[/4-column table]]

[[circled]] 15b [[/circled]]