# Bond/Barratt Monte Carlo simulations

This circuit model uses the Bond/Barratt models for SAB and SABC circuits except that the work index values simulated come from a Normal distribution that is defined by synthetic test samples loaded into the Testwork database. The parameters loaded into the database to not represent actual laboratory test results, but the inputs to the random number generator.

The laboratory test parameters are used to encode Monte Carlo statistics according to this recipe:

**Bond ball mill work index**is simulated as an independent variable- The
*wibm*field encodes the**mean**of the distribution - the
*gpr*field encodes the**standard deviation**of the distribution

- The
**Bond rod mill work index**is simulated as dependent on the ball mill work index- the WiRM mean comes from linear relationship WiRM = Coeff * WiBM + Const
- the
*wirm*field encodes the**Coeff**of the WiRM/WiBM relationship - the
*p80*field encodes the**Const**of the WiRM/WiBM relationship - the
*gpr*field encodes the**standard deviation**of the rod mill work index

**Bond crushing work index**is simulated as an independent variable- The
*wic*field encodes the**mean**of the distribution - the
*stddev*field encodes the**standard deviation**of the distribution

- The
**Ore density**is simulated as an independent variable and is encoded in the WiC table- The
*max*field encodes the**mean**of the distribution - the
*min*field encodes the**standard deviation**of the distribution

- The