The Old Yellow Micarta Was Used As An Elictrical Insulator By Ge Westinghouse For Circuit Boards. It's Production Was Stopped Because Of The Asbestos Content, And For No Other Reason. It Was One Of The Best Insulators They Had Come Up With, And Was Very Expensive To Replace. The Production Being Stopped Had Nothing To Do With Cuemakers, Or Cues. It Was Actually More Widely Used In Other Crafts Than It Ever Was For Cues. I Have Found Large Supplies Of It, In Some Very Odd Locations, And Through Some Very Odd Avenues. I Will Not Disclose The Other Things That It Was Used For Because I Am Still Slowly Buying All I Can Find Through These Avenues. I Have Bought Nearly Fifty Pounds Of The Material Over The Last 2 Years Or So. That May Be Greedy, But I Did A Lot Of Research To Find The Materials. I Hope My Information Helps.
P.s. Yes I Do Have Inside Information Regarding Westinghouse, And The Production/non-production Of The Material. The Largest Plant That Was Used To Make It Was Very Local To Me. The Production Shop, At The Time It Was Discontinued Was Run By Someone Very Close To Me.