Todd's Blast Design Viewer and Dot Sheet Maker

Data

⬆

Drop CSV here

or use Upload CSV

With headers: id, x, y, elevationn (feet)

Headerless CSV: map each column after upload

CSV has no header row

Depth = collar elev − design floor (+ subdrill). All units in feet & inches.

Design floor elevation (RL) Subdrill Hole diameter (inches) Stemming height Burden (ft) Spacing (ft)

Burden & spacing used for rock volume and powder factor. Leave blank to use estimated pattern values.

ANFO density (g/cm³) ANFO charge (lb/ft)

lb/ft = 0.3405 × ρ × d² (ρ density, d diameter in inches)
Charge length = hole depth − stem height
Total charge/hole = lb/ft × (depth − stem)

Elev/subdrill/stemming: 15' 6" or decimal ft. Optional CSV: diameter, stemming.

Set floor RL to compute depths

lb/ft and weight appear when design is set

Hole IDs Depth labels Round depth labels (whole ft) Grid Perimeter box Flip east–west Rotate pattern 0°

Color by Scale collars by diameter Display size boost

low high

Elevation (RL)

Click a hole on the plan

Upload a CSV (with or without headers). Headerless files open a column mapper.

Or load the sample pattern · lengths in feet & inches

X: — Y: — Zoom: 100%

ID	X	Y	Elev.	Depth	Stem	Chg len	lb/ft	Chg/hole	Toe RL	Dia.
No holes

First row is a header (skip it as data)