The following chart appeared in _American Woodturner_ June 1990, Originally posted to rec.woodworking by Bruce Taylor taylor@tpwosf.tay1.dec.com ------------------------------------------------------------------------ Wood Reaction Site Potency Source Incidence ---- -------- ---- ------- ------ --------- Bald Cypress S R + D R Balsam Fir S E,S + LB C Beech S,C E,S,R ++ LB,D C Birch S R ++ W,D C Black Locust I,N E,S +++ LB C Blackwood S E,S ++ W,D C Boxwood S E,S ++ W,D C Cashew S E,S + W,D R Cocobolo I,S E,S,R +++ W,D C Dahoma I E,S ++ W,D C Ebony I,S E,S ++ W,D C Elm I E,S + D R Goncalo Alves S E,S ++ W,D R Greenheart S E,S +++ W,D C Hemlock C R ? D U Iroko I,S,P E,S,R +++ W,D C Mahogany S,P S,R + D U Mansonia I,S E,S +++ W,D C N + D Maple (Spalted) S,P R +++ D C Mimosa N ? LB U Myrtle S R ++ LB,D C Oak S E,S ++ LB,D R C ? D U Obeche I,S E,S,R +++ W,D C Oleander DT N,C ++++ D,W,LB C Olivewood I,S E,S,R +++ W,D C Opepe S R + D R Padauk S E,S,R + W,D R Pau Ferro S E,S + W,D R Peroba Rosa I R,N ++ W,D U Purpleheart N ++ W,D C Quebracho I R,N ++ LB,D C C ? D U Redwood S,P E,S,R ++ D R C ? D U Rosewoods I,S E,S,R ++++ W,D U Satinwood I E,S,R +++ W,D C Sassafras S R + D C DT N + D,W,LB R C ? D U Sequoia I R + D R Snakewood I R ++ W,D R Spruce S R + W,D R Walnut, Black S E,S ++ W,D C Wenge S E,S,R + W,D C Willow S R,N + D,W,LB U West. Red Cedar S R +++ D,LB C Teak S,P E,S,R ++ D C Yew I E,S ++ D C DT N,C ++++ W,D C Zebrawood S E,S ++ W,D ------------------------------------------------------------------------ REACTION: SITE: SOURCE: INCIDENCE: I - irritant S - skin D - dust R - rare S - sensitizer E - eyes LB - leaves,bark C - common C - nasopharyngeal R - respiratory W - wood U - uncommon cancer P - pheumonitis, C - cardiac alveolitis (hypersensitivity pneumonia) DT - direct toxin N - nausea, malaise ------------------------------------------------------------------------ Reference: 1. _Woods Toxic to Man_, author unknown 2. Woods, B., Calnan, C.D., "Toxic Woods." _Br. Journal of Dermatology_ 1976 3. _ILO Encyclopedia of Occupational Health and Safety_ 1983 4. Lame, K., McAnn, M., _AMA Handbook of Poisonous and Injurious Plants_, AMA 1985 5. _Poisondex_, Micromedix Inc. 1990