HTML BlastCalc - Simple - IMPERIAL Created by Brent Buffham © 2023 - Imperial Units Go Back... Metric Simple Pattern Properties Burden (ft) Spacing (ft) Bench Height (ft) Number of Holes (integer) Hole Properties Stemming (ft) Angle (°) [vertical = 0°] Sub Drill (ft) Diameter (in) Explosive Properties Av. Inhole Density (lb/ft^3) Rock Properties Rock Density (lb/ft^3) Results Area ● Pattern Area = 24.75 yd^2 Volume ● Total Blast Rock Volume = 000.00 yd^3 ● Hole Charge Length Volume = 849.42 ft^3 ● Hole cubic feet Per Yard = 849.42 ft^3 Explosives ● Total Explosives = 000.00 lb ● Hole Charge Length Mass = 849.42 lb ● Charge per yard mass = 000.00 lb Mass ● Total Blast Rock Tons = 000.00 Ton Powder Factors ● Powder Factor Volume = 000.00 lb/yd^3 ● Powder Factor Tons = 000.00 lb/Ton Lengths ● Hole Length = 13.2 ft ● Total Drill Yards = 849.42 yd ● Total Charge Yards = 000.00 yd This calculator was first published as "BlastCalc" on the Apple iOS App Store as a native iPhone and iPad app in 2010. The publisher was Chin-Apse Pty. Ltd. This is app was something of great use to many people. It is a simple calculator of common blasting ratios and statistics. modern browsers support HTML and CSS better now, as such the app that died on the Apple Store can now live again. Created code is in HTML/JS/CSS. Thank you. Brent Buffham © 2023.