Conventional or manual drafting of exploration data has been used since the early 1900s. Within the past 4 or 5 years, the use of small computer and digitizing equipment to supplement proved methods has saved time, improved accuracy, and simplified modifications.

Maps, charts, cross sections, etc, can be captured, edited, and drawn by plotters in half the time of conventional methods. Once in digital form, documents can be edited and easily combined with other graphics. Maps with different scales and projections can be transformed to common projections and scales.

Phillips Petroleum Co. uses a Bendix 100/101 digitizing-drafting system which consists of a Nova 100 computer with tape drive and disk pack, a Bendix cursor and table, and a Tektronix 4014-1 CRT. Output can be generated for both a Calcomp 748 plotter and/or a Versatec 42-in. electrostatic plotter. This type of system is not a replacement for manual drafting, but is a supplement.

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In many projects, the final product is a combination of manual drafting, computer drafting, and "standard" computer application techniques.

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