Chief Engineering Technician
- J.J. Kelly High School - Diploma 1969.
- Wise County Vocational Technical School, September, 1969 - February, 1971, Drafting Certificate.
- Kentucky Department of Labor Apprenticeship and Training Course, Journeyman Engineering Aide, March,
1972 to November, 1977. - National Institute for Certification in Engineering Technologies sponsored by National Society of Professional
Engineers, Civil Engineering Technician, Certificate No. 054395, August, 1976. - Architectural and Building Construction Engineering Technician, Certificate No. 054395, March, 1980.
- Introduction To Programming - Basic, Clinch Valley College of the University of Virginia, Wise, Virginia, 1982.
- Hydrology and Sedimentology of Surface Mined Lands, University of Kentucky, Lexington, Kentucky, 1983.
- SEDCAD, University of Kentucky, Lexington, Kentucky, 1990.
- Eagle Point Applications, Eagle Point Software, Richmond, Virginia, 1994.
- Analysis of Slopes by Reame 2K, University of Kentucky 8/22/02
Continuing Education:
Mr. Crabtree is currently Chief Engineering Technician with Maxim Engineering, Inc., of Coeburn, Virginia. His duties include
developing engineering drawings, detailed plans and cross sections from field surveys; Using AUTOCAD to design and
develop plans, such as hollow fills, side hill fills, haulroads, pond embankments and site plans, from rough sketches,
field notes and instructions from engineers; Calculation of estimated storm runoff from proposed mining areas and
design of appropriate drainage structures to meet applicable state and federal regulations (sediment ponds, earth and
rock dams, spillways, open channels, pipes); Design and layout of primary haulroad and access roads for proposed
operations; Design of length, grade, cut and fill sections, culverts, ditches and surfacing; Calculation of overburden
yardage, material swell factors, stripping ratios and regrade configurations for surface mines; Design of excess spoil and
coal refuse disposal fills including geotechnical studies, stability analyses, drainage control structures; Design and
layout of underground mining operations including face-up areas, support facilities, transportation facilities, mine
projections, strata control and ventilation systems; Calculation of strike and dip of strata, and coal reserves; Subsidence
prediction calculations and subsidence control plans; Design achieved through the utilization and proficient use of
computer design and drafting systems such as AUTOCAD, Planimeter, and digitizer; Create presentation materials
using graphics on AUTOCAD and WordPerfect; Supervise lower grade draftsmen and delegate their job duties.
From October, 1974 to March, 1982, Mr Crabtree was employed by Beth Elkhorn Corporation of Jenkins, Kentucky as an
engineering detail technician. His duties included computing grade elevations, plotting surveys, and making contour
maps for proposed construction; Compiling materials lists and cost estimates, structural steel detailing and design
recommendations for conveyor design and construction; Calculation of coal reserves; Design and layout of underground
mining operations including face-up areas, support facilities, transportation facilities, mine projections, strata control and
ventilation systems; Conducted ventilation surveys and set spads; Subsidence control plans and subsidence prediction
calculations; Created slide presentations using conventional drafting and graphic design methods.
From January, 1972 to October, 1974, Mr. Crabtree was employed by Thompson & Litton, Inc. of Wise, Virginia as a
draftsman. His responsibilities included drafting plans for sewage treatment plants and water treatment plants and
assisting in design of consulting projects.