Underhill’s First Strata Plan

J.M. Parnell, and programmer, at the Wang WCS/20.

Underhill’s First Strata Plan

A.T. Holmes completes Underhill’s first strata plan (VR 61). By 2011, Underhill has completed over 190 strata plans.

(Pictured: J.M. Parnell, and programmer, at the Wang WCS/20. The Wang had 32Kb of memory, and dual 250Kb floppy drives (one for the software, and one for data). Survey/plotting software (TRIAX) was developed in-house. ca. 1975-1985. )